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Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Mar. 31, 2019	May 01, 2019	Sep. 30, 2018
Document And Entity Information [Abstract]
Trading Symbol	CVLT
Entity Registrant Name	COMMVAULT SYSTEMS INC
Entity Central Index Key	0001169561
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		45,679,184
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 3.0

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 327,992	$ 330,784
Short-term investments	130,338	131,637
Trade accounts receivable, net	176,836	162,119
Prepaid expenses and other current assets	19,836	22,248
Total current assets	655,002	646,788
Property and equipment, net	122,716	128,612
Deferred commissions cost	33,619	33,092
Other assets	11,116	10,150
Total assets	822,453	818,642
Current Liabilities:
Accounts payable	2,186	761
Accrued liabilities	85,721	82,299
Deferred revenue	238,439	241,113
Total current liabilities	326,346	324,173
Deferred revenue, less current portion	99,257	84,661
Deferred tax liabilities, net	2,594	2,430
Other liabilities	2,953	3,314
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value: 50,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value, 250,000 shares authorized, 45,582 shares and 45,118 shares issued and outstanding at March 31, 2019 and 2018, respectively	454	450
Additional paid-in capital	887,907	782,764
Accumulated deficit	(485,490)	(373,678)
Accumulated other comprehensive loss	(11,568)	(5,472)
Total stockholders’ equity	391,303	404,064
Total liabilities and stockholders’ equity	$ 822,453	$ 818,642

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Mar. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	45,582,000	45,118,000
Common stock, shares outstanding (in shares)	45,582,000	45,118,000

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Total revenues	$ 710,957	$ 699,393	$ 645,005
Cost of revenues:
Total cost of revenues	117,006	98,152	85,192
Gross margin	593,951	601,241	559,813
Operating expenses:
Sales and marketing	370,088	410,727	383,933
Research and development	92,647	91,030	79,558
General and administrative	100,946	90,709	88,929
Restructuring	14,765	0	0
Depreciation and amortization	10,597	9,721	8,635
Total operating expenses	589,043	602,187	561,055
Income (loss) from operations	4,908	(946)	(1,242)
Interest income	5,519	2,228	1,163
Interest expense	0	(1,161)	(957)
Equity in loss of affiliate	0	(3,621)	(958)
Income (loss) before income taxes	10,427	(3,500)	(1,994)
Income tax expense (benefit)	6,866	58,400	(1,486)
Net income (loss)	$ 3,561	$ (61,900)	$ (508)
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.08	$ (1.37)	$ (0.01)
Diluted (in dollars per share)	$ 0.07	$ (1.37)	$ (0.01)
Weighted average common shares outstanding:
Basic (in shares)	45,827	45,242	44,700
Diluted (in shares)	47,601	45,242	44,700
Software and products
Revenues:
Total revenues	$ 309,899	$ 311,745	$ 290,668
Cost of revenues:
Total cost of revenues	25,691	7,223	3,045
Services
Revenues:
Total revenues	401,058	387,648	354,337
Cost of revenues:
Total cost of revenues	$ 91,315	$ 90,929	$ 82,147

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 3,561	$ (61,900)	$ (508)
Other comprehensive income (loss):
Foreign currency translation adjustment	(6,096)	6,843	(3,106)
Comprehensive loss	$ (2,535)	$ (55,057)	$ (3,614)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Mar. 31, 2016		44,134
Beginning Balance at Mar. 31, 2016	$ 421,613	$ 440	$ 602,999	$ (172,617)	$ (9,209)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	73,928		73,928
Tax benefits relating to share-based payments	3,682		3,682
Share issuances related to stock-based compensation (in shares)		1,664
Share issuances related to stock-based compensation	21,321	$ 17	21,304
Repurchase of common stock (in shares)		(982)
Repurchase of common stock	(49,998)	$ (10)	(7,436)	(42,552)
Net income (loss)	(508)			(508)
Other comprehensive income (loss)	(3,106)				(3,106)
Ending Balance (in shares) at Mar. 31, 2017		44,816
Ending Balance at Mar. 31, 2017	466,932	$ 447	694,477	(215,677)	(12,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	74,129		74,129
Share issuances related to stock-based compensation (in shares)		2,400
Share issuances related to stock-based compensation	30,114	$ 24	30,090
Repurchase of common stock (in shares)		(2,098)
Repurchase of common stock	(112,218)	$ (21)	(16,367)	(95,830)
Net income (loss)	(61,900)			(61,900)
Other comprehensive income (loss)	6,843				6,843
Ending Balance (in shares) at Mar. 31, 2018		45,118
Ending Balance at Mar. 31, 2018	404,064	$ 450	782,764	(373,678)	(5,472)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	80,487		80,487
Share issuances related to stock-based compensation (in shares)		2,579
Share issuances related to stock-based compensation	41,984	$ 25	41,959
Repurchase of common stock (in shares)		(2,115)
Repurchase of common stock	(132,697)	$ (21)	(17,303)	(115,373)
Net income (loss)	3,561			3,561
Other comprehensive income (loss)	(6,096)				(6,096)
Ending Balance (in shares) at Mar. 31, 2019		45,582
Ending Balance at Mar. 31, 2019	$ 391,303	$ 454	$ 887,907	$ (485,490)	$ (11,568)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income (loss)	$ 3,561	$ (61,900)	$ (508)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	12,060	11,785	10,232
Noncash stock-based compensation	80,487	74,129	73,928
Excess tax benefits from stock-based compensation	0	0	(6,242)
Deferred income taxes	164	53,737	(11,468)
Equity in loss of affiliate	0	3,621	958
Amortization of deferred commissions cost	17,348	16,587	16,065
Changes in operating assets and liabilities:
Trade accounts receivable	(24,092)	(25,082)	(16,372)
Other current assets and Other assets	11,400	(6,876)	(55)
Deferred commissions cost	(18,967)	(17,984)	(18,393)
Accounts payable	1,485	618	(190)
Accrued liabilities	5,075	3,496	15,088
Deferred revenue	21,719	33,971	36,666
Other liabilities	(60)	(1,933)	330
Net cash provided by operating activities	110,180	84,169	100,039
Cash flows from investing activities
Purchase of short-term investments	(130,338)	(142,424)	(96,306)
Proceeds from maturity of short-term investments	131,637	131,480	74,685
Purchase of property and equipment	(6,560)	(7,047)	(6,424)
Net cash used in investing activities	(5,261)	(17,991)	(28,045)
Cash flows from financing activities
Repurchase of common stock	(132,697)	(112,218)	(49,998)
Proceeds from stock-based compensation plans	41,984	30,114	21,321
Excess tax benefits from stock-based compensation	0	0	6,242
Net cash used in financing activities	(90,713)	(82,104)	(22,435)
Effects of exchange rate — changes in cash	(16,998)	17,219	(8,175)
Net increase (decrease) in cash and cash equivalents	(2,792)	1,293	41,384
Cash and cash equivalents at beginning of year	330,784	329,491	288,107
Cash and cash equivalents at end of year	327,992	330,784	329,491
Supplemental disclosures of cash flow information
Interest paid	0	592	680
Income taxes paid	$ 11,491	$ 6,448	$ 5,413

Nature of Business	12 Months Ended
Nature of Business	Mar. 31, 2019
Accounting Policies [Abstract]
Nature of Business	Nature of Business Commvault Systems, Inc. and its subsidiaries (Commvault or the Company) is a provider of data and information management software applications. The Company develops, markets and sells a suite of software applications and services, primarily in North America, Europe, Australia and Asia, that provides its customers with data protection solutions. In fiscal 2018 the Company also started selling appliances that integrate the Company's software with hardware and address a wide-range of business needs and use cases. The Company also provides its customers with a broad range of professional and customer support services.

Summary of Significant Accounting Policies

12 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements include the accounts of the Company. All intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make judgments and estimates that affect the amounts reported in the Company’s consolidated financial statements and the accompanying notes. The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. The amounts of assets and liabilities reported in the Company’s balance sheets and the amounts of revenues and expenses reported for each of its periods presented are affected by estimates and assumptions, which are used for, but not limited to, the accounting for revenue recognition, allowance for doubtful accounts, deferred commissions cost, income taxes and related reserves, stock-based compensation and accounting for research and development costs. Actual results could differ from those estimates.

Correction of an Immaterial Error in Previously Issued Financial Statements

Subsequent to the issuance of the financial statements for the year ended March 31, 2018, the Company concluded that the Statement of Operations for fiscal 2018 and fiscal 2017 contained an immaterial error related to the classification of legal fees related to intellectual property as Research and Development expenses and not General and Administrative expenses. These immaterial errors have been corrected by reclassifying $3,134 and $3,985 from Research and Development expense to General and Administrative expense for the years ended March 31, 2018 and 2017, respectively. This immaterial error did not have any impact on our financial position, net income (loss) or cash flow for fiscal 2018 or fiscal 2017.

Revenue

The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, which was adopted on April 1, 2017, using the full retrospective method. For further discussion of the Company's accounting policies related to revenue see Note 3.

Net Income per Common Share

Basic net income per common share is computed by dividing net income by the weighted average number of common shares during the period. Diluted net income per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options, vesting of restricted stock units and shares to be purchased under the Employee Stock Purchase Plan. The dilutive effect of such potential common shares is reflected in diluted earnings per share by application of the treasury stock method.

The following table sets forth the reconciliation of basic and diluted common share:



	Year Ended March 31,
	2019	2018	2017
Basic weighted average shares outstanding	45,827	45,242	44,700
Dilutive effect of stock options, restricted stock units, and employee stock purchase plan	1,774	—	—
Diluted weighted average shares outstanding	47,601	45,242	44,700

The following table summarizes the potential outstanding common stock equivalents of the Company at the end of each period, which have been excluded from the computation of diluted net income per common share, as its effect is anti-dilutive.



	Year Ended March 31,
	2019	2018	2017
Stock options, restricted stock units, and shares under the employee stock purchase plan	998	7,312	8,106

Software Development Costs

Research and development expenditures are charged to operations as incurred. Based on the Company’s software development process, technological feasibility is established upon completion of a working model, which also requires certification and extensive testing. Costs incurred by the Company between completion of the working model and the point at which the product is ready for general release are immaterial.

Trade and Other Receivables

Trade and other receivables are primarily comprised of trade receivables that are recorded at the invoice amount, net of an allowance for doubtful accounts, which is not material. Unbilled receivables represent amounts for which revenue has been recognized but which have not yet been invoiced to the customer. The current portion of unbilled receivables is included in Trade accounts receivable on the consolidated balance sheet. Long term unbilled receivables are included in Other assets.

Accounting for Income Taxes

The Company accounts for income taxes in accordance with ASC Topic 740, “Income Taxes” (ASC 740). The provision for income taxes and effective tax rates are calculated by legal entity and jurisdiction and are based on a number of factors, including the level of pre-tax earnings, income tax planning strategies, differences between tax laws and accounting rules, statutory tax rates and credits, uncertain tax positions and valuation allowances. The Company uses significant judgment and estimates in evaluating tax positions. The effective tax rate in a given financial statement period may be materially impacted by changes in the mix and level of earnings by taxing jurisdiction.

Under ASC 740, deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when, in the Company's judgment, it is more likely than not that deferred tax assets will not be realized. In assessing the need for a valuation allowance, the Company weighs the available positive and negative evidence, including historical levels of pre-tax income, legislative developments, expectations and risks associated with estimates of future pre-tax income, and prudent and feasible tax planning strategies.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with maturities of three months or less at the date of purchase to be cash equivalents. As of March 31, 2019, the Company’s cash and cash equivalents balance consisted primarily of money market funds.

Short-term Investments

Short-term investments consist of investments with maturities of twelve months or less that do not meet the criteria to be cash equivalents. The company determines classification of the investment as trading, available-for-sale or held-to-maturity at the time of purchase and reevaluates classification whenever changes in circumstances indicate changes in classification may be necessary. The Company’s current short-term investments are classified as held-to-maturity. Held-to-maturity investments consist of securities that the Company has the intent and ability to retain until maturity. Held-to-maturity investments are initially recorded at cost and adjusted for the amortization of discounts from the date of purchase through maturity. Income related to investments is recorded as interest income in the Consolidated Statement of Operations. Cash inflows and outflows related to the sale, maturity and purchase of investments are classified as investing activities in the Company’s Consolidated Statements of Cash Flows.

Concentration of Credit Risk

The Company grants credit to customers in a wide variety of industries worldwide and generally does not require collateral. Credit losses relating to these customers have been minimal.

Sales through the Company’s distribution agreement with Arrow Enterprise Computing Solutions, Inc. (Arrow) totaled approximately 38%, 36% and 36% of total revenues for the years ended March 31, 2019, 2018 and 2017, respectively. Arrow accounted for approximately 38% of total accounts receivable as of March 31, 2019 and 2018, respectively.

Fair Value of Financial Instruments

The carrying amounts of the Company’s cash and cash equivalents, accounts receivable and accounts payable approximate their fair values due to the short-term maturity of these instruments. As of March 31, 2019 and 2018, the Company’s short-term investments balance consisted of U.S. Treasury Bills.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for such asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value should maximize the use of observable inputs and minimize the use of unobservable inputs. To measure fair value, the Company uses the following fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable:

Level 1 — Quoted prices in active markets for identical assets or liabilities.

Level 2 — Inputs other than Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data by correlation or other means.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The following table summarizes the composition of the Company’s financial assets measured at fair value on a recurring basis at March 31, 2019 and March 31, 2018:



March 31, 2019	Level 1		Level 2		Level 3	Total
Cash equivalents	$	102,702	—		—	$	102,702
Short-term investments	—		$	131,937	—	$	131,937



March 31, 2018	Level 1		Level 2		Level 3	Total
Cash equivalents	$	43,545	—		—	$	43,545
Short-term investments	—		$	132,263	—	$	132,263

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation and amortization. Land is not depreciated. The Company provides for depreciation on a straight-line basis over the estimated useful lives of the assets. The depreciable assets that comprise the Company's owned headquarters classified as Buildings are being depreciated over lives ranging from ten to sixty years. Computer and related equipment is generally depreciated over eighteen months to three years and furniture and fixtures are generally depreciated over three to twelve years. Leasehold improvements are amortized over the shorter of the useful life of the improvement or the term of the related lease. Expenditures for routine maintenance and repairs are charged against operations. Major replacements, improvements and additions are capitalized.

Asset Retirement Obligation

A liability for the fair value of an asset retirement obligation and corresponding increase to the carrying value of the related leasehold improvements are recorded at the time leasehold improvements are acquired. The Company maintains certain office space for which the lease agreement requires that the Company return the office space to its original condition upon vacating the premises. Accordingly, the balance of the asset retirement obligation was $1,479 as of March 31, 2019 and $1,303 as of March 31, 2018.

Long-Lived Assets

The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. To determine the recoverability of its long-lived assets, the Company evaluates the estimated future undiscounted cash flows that are directly associated with, and that are expected to arise as a direct result of, the use and eventual disposition of the long-lived asset. If the estimated future undiscounted cash flows demonstrate that recoverability is not probable, an impairment loss would be recognized. An impairment loss would be calculated based on the excess carrying amount of the long-lived asset over the long-lived asset’s fair value. The fair value would be determined based on valuation techniques such as a comparison to fair values of similar assets. There were no impairment charges recognized during the years ended March 31, 2019, 2018 and 2017.

Deferred Commissions Cost

Sales commissions and related payroll taxes earned by the Company's employees are considered incremental and recoverable costs of obtaining a contract with a customer. The Company’s typical contracts include performance obligations related to software licenses, software updates, customer support and other professional services. In these contracts, incremental costs of obtaining a contract are allocated to the performance obligations based on the relative estimated standalone selling prices and then recognized on a systematic basis that is consistent with the transfer of the goods or services to which the asset relates. The Company does not pay commissions on annual renewals of contracts for software updates and customer support for perpetual licenses. The costs allocated to software and products are expensed at the time of sale, when revenue for the functional software license or appliance is recognized. The costs allocated to software updates and customer support for perpetual licenses are amortized ratably over a period of approximately five years, the expected period of benefit of the asset capitalized. The Company currently estimates a period of five years is appropriate based on consideration of historical average customer life and the estimated useful life of the underlying software or appliance sold as part of the transaction. The costs related to professional services are amortized within one quarter following the date of the related software or appliance sale, which is typically the period the related professional services are provided and revenue is recognized. Amortization expense related to these costs is included in Sales and marketing expenses in the accompanying condensed consolidated statements of operations.

Costs related to software updates and support for term-based, or subscription software licenses, are limited to the contractual period of the arrangement as the Company intends to pay a commensurate commission upon renewal of the subscription license and related updates and support.

Deferred Revenue

Deferred revenues represent amounts collected from, or invoiced to, customers in excess of revenues recognized. This results primarily from the billing of annual customer support agreements, and billings for other professional services fees that have not yet been performed by the Company. The value of deferred revenues will increase or decrease based on the timing of invoices and recognition of revenue.

Related Party Transactions

During fiscal 2019, Joseph F. Eazor, former CEO of Rackspace, Inc (Rackspace), was a Director of the Company. Rackspace has been a customer of the Company since 2006. On July 31, 2018, Joseph F. Eazor resigned from the Board of Directors. Total recognized revenue related to Rackspace for fiscal 2019 through July 31, 2018 was $631.

Accounting for Stock-Based Compensation

The Company utilizes the Black-Scholes pricing model to determine the fair value of non-qualified stock options on the dates of grant. Restricted stock units without a market condition are measured based on the fair market values of the underlying stock on the date of grant. The Company recognizes stock-based compensation using the straight-line method for all stock awards that don't include a market or performance condition.

Share Repurchases

The Company considers all shares repurchased as canceled shares restored to the status of authorized but unissued shares on the trade date. The aggregate purchase price of the shares of the Company’s common stock repurchased is reflected as a reduction to Stockholders’ Equity. The Company accounts for shares repurchased as an adjustment to common stock (at par value) with the excess repurchase price allocated between Additional Paid-in Capital and Accumulated Deficit.

Sales Tax

The Company records revenue net of sales tax.

Advertising Costs

The Company expenses advertising costs as incurred. Advertising expenses were $4,678, $5,704, and $7,816 for the years ended March 31, 2019, 2018 and 2017, respectively.

Shipping and Handling Costs

Shipping and handling costs are included in cost of revenues for all periods presented.

Foreign Currency Translation

The functional currencies of the Company’s foreign operations are deemed to be the local country’s currency. Assets and liabilities of the Company’s international subsidiaries are translated at their respective period-end exchange rates, and revenues and expenses are translated at average currency exchange rates for the period. The resulting balance sheet translation adjustments are included in Other Comprehensive Loss and are reflected as a separate component of Stockholders’ Equity.

Foreign currency transaction gains and losses are recorded in “General and administrative expenses” in the Consolidated Statements of Operations. The Company recognized net foreign currency transaction gains of $984, $109 and $644 in the years ended March 31, 2019, 2018, and 2017, respectively. The net foreign currency transaction gains recorded in “General and administrative expenses” include settlement gains and losses on forward contracts disclosed below.

Comprehensive Income (Loss)

Comprehensive income (loss) is defined to include all changes in equity, except those resulting from investments by stockholders and distribution to stockholders.

Recently Issued Accounting Standards

Leases

In February 2016, the FASB issued ASU 2016-02 “Leases (Topic 842)” (“ASU 2016-02”). Under ASU 2016-02, a lessee will recognize a liability to make lease payments (the lease liability) and a right-to-use asset representing its right to use the underlying asset for the lease term. The Company will adopt this ASU in the first quarter of fiscal 2020 and will apply it at the beginning of the period of adoption with the cumulative effect of applying the new rules recognized then. As part of its assessment, the Company performed a scoping exercise and determined the lease population. Based on this assessment, the Company anticipates the most significant impact will be the recognition of right-of-use assets and lease liabilities on its consolidated balance sheet, related to operating leases. This impact on its consolidated balance sheet is estimated to be less than 10% of total assets and liabilities. Furthermore, the Company expects no significant impact on its consolidated income statement. Additionally, the Company is in the process of finalizing the implementation of a lease accounting system and refining internal controls and processes related to both the implementation and ongoing compliance of the new guidance.

Credit Losses on Financial Instruments

In June 2016, the FASB issued ASU 2016-13 “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (ASU 2016-13). The standard amends guidance on the impairment of financial instruments. The ASU estimates credit losses based on expected losses and provides for a simplified accounting model for purchased financial assets with credit deterioration. The standard requires a modified retrospective basis adoption through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The amendments of this ASU are effective for the Company's fiscal 2021, with early adoption permitted. The Company is currently assessing the impact the adoption of ASU 2016-13 will have on the financial statements.

There have been no other accounting pronouncements issued but not yet adopted by the Company which are expected to have a material impact on the Company’s financial position, results of operations or cash flows.

Revenue

12 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue

The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, which was adopted on April 1, 2017, using the full retrospective method.

The Company derives revenues from two primary sources: software and products, and services. Software and products revenue includes the Company's software and integrated appliances that combine the Company's software with hardware. Services include customer support (software updates and technical support), consulting, assessment and design services, installation services and customer education. A typical contract includes both licenses and services.

The Company’s software licenses typically provide for a perpetual right to use the Company’s software. The Company also sells term-based software licenses that expire, which are referred to as subscription arrangements. The Company does not customize its software and installation services are not required. The software is delivered before related services are provided and is functional without professional services, updates and technical support. The Company has concluded that its software license is functional intellectual property that is distinct as the user can benefit from the software on its own. Software revenue is typically recognized when the software is delivered and/or made available for download as this is the point the user of the software can direct the use of, and obtain substantially all of the remaining benefits from the functional intellectual property. The Company does not recognize software revenue related to the renewal of subscription software licenses earlier than the beginning of the subscription period.

In fiscal 2018, the Company also started selling appliances that integrate the Company's software with hardware and address a wide-range of business needs and use cases, ranging from support for remote or branch offices with limited IT staff up to large corporate data centers. Revenue related to appliances is recognized when control of the appliances passes to the customer; typically upon delivery. Revenue to date related to appliances has not been significant.

Services revenue includes revenue from customer support and other professional services. Customer support includes software updates on a when-and-if-available basis, telephone support, integrated web-based support and bug fixes or patches. The Company sells its customer support contracts as a percentage of net software purchases the support is related to. Customer support revenue is recognized ratably over the term of the customer support agreement, which is typically one year.

The Company’s other professional services include consulting, assessment and design services, installation services and customer education. Customer education services include courses taught by the Company’s instructors or third-party contractors. Revenue related to other professional services and customer education services is typically recognized as the services are performed.

Most of the Company’s contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. Standalone selling prices of software and appliances are typically estimated using the residual approach. Standalone selling prices of services are typically estimated based on observable transactions when these services are sold on a standalone basis.

The Company’s typical performance obligations include the following:



Performance Obligation	When Performance Obligation is Typically Satisfied	When Payment is Typically Due	How Standalone Selling Price is Typically Estimated
Software and Products Revenue
Software Licenses	Upon shipment or made available for download (point in time)	Within 90 days of shipment except for certain subscription licenses which are paid for over time	Residual approach
Appliances	When control of the appliances passes to the customer; typically upon delivery	Within 90 days of delivery	Residual approach
Customer Support Revenue
Software Updates	Ratably over the course of the support contract (over time)	At the beginning of the contract period	Observable in renewal transactions
Customer Support	Ratably over the course of the support contract (over time)	At the beginning of the contract period	Observable in renewal transactions
Professional Services
Other Professional Services (except for education services)	As work is performed (over time)	Within 90 days of services being performed	Observable in transactions without multiple performance obligations
Education Services	When the class is taught (point in time)	Within 90 days of services being performed	Observable in transactions without multiple performance obligations

Disaggregation of Revenue

The Company disaggregates revenue from contracts with customers into the nature of the products and services and geographical regions. The geographic regions that are tracked are the Americas (United States, Canada, Latin America), EMEA (Europe, Middle East, Africa) and APAC (Australia, New Zealand, Southeast Asia, China). The Company operates in one segment.



	Year Ended March 31, 2019
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	170,114	$	95,913	$	43,872	$	309,899
Customer Support Revenue	237,190		82,895		38,662		358,747
Professional Services	23,076		12,380		6,855		42,311
Total Revenue	$	430,380	$	191,188	$	89,389	$	710,957



	Year Ended March 31, 2018
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	167,858	$	100,452	$	43,435	$	311,745
Customer Support Revenue	233,991		75,807		36,257		346,055
Professional Services	23,453		11,289		6,851		41,593
Total Revenue	$	425,302	$	187,548	$	86,543	$	699,393



	Year Ended March 31, 2017
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	168,243	$	82,393	$	40,032	$	290,668
Customer Support Revenue	216,656		65,732		32,466		314,854
Professional Services	22,704		11,364		5,415		39,483
Total Revenue	$	407,603	$	159,489	$	77,913	$	645,005

Information about Contract Balances

Amounts collected in advance of services being provided are accounted for as deferred revenue. Nearly all of the Company's deferred revenue balance is related to services revenue, primarily customer support contracts.

In some arrangements the Company allows customers to pay for term based software licenses and products over the term of the software license. Amounts recognized as revenue in excess of amounts billed are recorded as unbilled receivables. Unbilled receivables which are anticipated to be invoiced in the next twelve months are included in Accounts receivable on the consolidated balance sheet. Long term unbilled receivables are included in Other assets. The opening and closing balances of the Company’s accounts receivable, unbilled receivables, and deferred revenues are as follows:



	Accounts Receivable		Unbilled Receivable (current)		Unbilled Receivable (long-term)		Deferred Revenue (current)			Deferred Revenue (long-term)
Opening Balance as of March 31, 2018	$	152,219	$	9,900	$	4,380	$	241,113		$	84,661
Increase/(decrease), net	9,351		5,366		2,836		(2,674		)	14,596
Ending Balance as of March 31, 2019	$	161,570	$	15,266	$	7,216	$	238,439		$	99,257

The increase in accounts receivable is primarily a result of an increase in subscription software transactions that are recognized as revenue at the time of sale but paid for over time. The net increase in deferred revenue is primarily the result of an increase in deferred customer support revenue related to software and products revenue transactions and customer support renewals during fiscal 2019.

The amount of revenue recognized in the period that was included in the opening deferred revenue balance was $238,603 for the year ended March 31, 2019. The vast majority of this revenue consists of customer support arrangements. The amount of revenue recognized from performance obligations satisfied in prior periods was not material.

Remaining Performance Obligations

In addition to the amounts included in deferred revenue as of March 31, 2019, approximately $27,956 of revenue may be recognized from remaining performance obligations, of which $3,137 was related to software and products. The Company expects the software and products revenue to be recognized next quarter. The majority of the services revenue is related to other professional services which may be recognized over the next twelve months but is contingent upon a number of factors, including customers’ needs and schedules.

Property and Equipment

12 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consist of the following:



	March 31,
	2019			2018
Land	$	9,445		$	9,445
Buildings	103,244			103,244
Computers, servers and other equipment	38,551			37,132
Furniture and fixtures	15,184			15,594
Leasehold improvements	10,251			10,143
Purchased software	1,473			1,425
Construction in process	2,091			57
	180,239			177,040
Less: Accumulated depreciation and amortization	(57,523		)	(48,428		)
	$	122,716		$	128,612

The Company recorded depreciation and amortization expense of $12,060, $11,217, and $9,980 for the years ended March 31, 2019, 2018 and 2017, respectively.

Accrued Liabilities

12 Months Ended

Mar. 31, 2019

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consist of the following:



	March 31,
	2019		2018
Compensation and related payroll taxes	$	48,332	$	46,192
Other	37,389		36,107
	$	85,721	$	82,299

Commitments and Contingencies

12 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Leases

The Company leases various office facilities under non-cancelable leases, which expire on various dates through April 2023. Future minimum lease payments under all operating leases at March 31, 2019 are as follows:



Year Ending March 31,
2020	$	9,008
2021	6,634
2022	4,273
2023	2,228
2024 and thereafter	1,530
	$	23,673

Rent expenses were $11,474, $12,215, and $10,377 for the years ended March 31, 2019, 2018 and 2017, respectively.

Rent expense is calculated by amortizing total rental payments (net of any rental abatements, allowances and other rental concessions), on a straight-line basis, over the lease term. Accordingly, rent expense charged to operations differs from rent paid resulting in the Company recording deferred rent.

Purchase Commitments

The Company, in the normal course of business, enters into various purchase commitments for goods or services. Total non-cancellable purchase commitments as of March 31, 2019 are approximately $16,748 for fiscal 2020, $3,221 for fiscal 2021, $447 for fiscal 2022 and $104 for fiscal 2023 and beyond, totaling $20,520 for all periods through fiscal 2023. These purchase commitments relate primarily to marketing and IT services.

The Company has certain software royalty commitments associated with the shipment and licensing of certain products. Royalty expense is generally based on a fixed cost per unit shipped or a fixed fee for unlimited units shipped over a designated period. Royalty expense, included in cost of software and products revenues, was $12,319 in fiscal 2019, $4,462 in fiscal 2018 and $2,646 in fiscal 2017.

Warranties and Indemnifications

The Company offers a 90-day limited product warranty for its software. To date, costs related to this product warranty have not been material.

The Company provides certain provisions within its software licensing agreements to indemnify its customers from any claim, suit or proceeding arising from alleged or actual intellectual property infringement. These provisions continue in perpetuity, along with the Company’s software licensing agreements. The Company has never incurred a liability relating to one of these indemnification provisions, and management believes that the likelihood of any future payout relating to these provisions is remote. Therefore, the Company has not recorded a liability during any period for these indemnification provisions.

Legal Proceedings

From time to time, the Company is subject to claims in legal proceedings arising in the normal course of business. The Company does not believe that it is currently party to any pending legal action that could reasonably be expected to have a material adverse effect on its business or operating results.

Capitalization	12 Months Ended
Capitalization	Mar. 31, 2019
Equity [Abstract]
Capitalization	Capitalization On August 1, 2018 the Company's Board of Directors unanimously approved the termination of the Company’s rights agreement, which was originally scheduled to expire on November 14, 2018. The plan was amended to accelerate the expiration date to August 1, 2018, effectively terminating the plan as of that date. Common Stock The Company had 45,582 and 45,118 shares of common stock, par value $0.01, outstanding at March 31, 2019 and March 31, 2018, respectively. During fiscal 2019, the Company repurchased $132,697 of common stock, or 2,115 shares, under its share repurchase program. Shares Reserved for Issuance At March 31, 2019 the Company has reserved 4,736 shares in connection with its Stock Plans discussed in Note 8. Subsequent Event On April 18, 2019, the Board of Directors authorized an increase to the existing share repurchase program so that $200,000 was available. The authorization continues to expire on March 31, 2020.

Stock Plans

12 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Plans

The Company maintains the Omnibus Incentive Plan (the “2016 Incentive Plan”) for granting awards to employees. On August 23, 2018, the Company’s shareholders approved an amendment to the 2016 Incentive Plan to increase the maximum number of shares of common stock that may be delivered under plan to 5,550, an increase of 2,000 shares. The 2016 Incentive Plan authorizes a broad range of awards including stock options, stock appreciation rights, full value awards (including restricted stock, restricted stock units, performance shares or units and other stock-based awards) and cash-based awards.

The Company has one additional plan, the 2006 Long-Term Stock Incentive Plan (the “LTIP”), with outstanding options and awards but cannot be used for future grants.

The 2016 Incentive Plan permits the grant of incentive stock options, non-qualified stock options, restricted stock awards, restricted stock units, stock appreciation rights, performance stock awards and stock unit awards based on, or related to, shares of the Company’s common stock. As of March 31, 2019, approximately 2,781 thousand shares were available for future issuance under the 2016 Incentive Plan.

As of March 31, 2019, the Company has granted non-qualified stock options, restricted stock units and performance stock awards under its stock incentive plans. Historically, equity awards granted by the Company under its stock incentive plans generally vest quarterly over a three-year period, except that the shares that would otherwise vest quarterly over the first twelve months do not vest until the first anniversary of the grant. The Company anticipates that future grants under its stock incentive plans will be restricted stock units and performance stock awards and does not anticipate that it will grant stock options.

As of March 31, 2019, there was approximately $81,833 of unrecognized stock-based compensation expense related to all of the Company's employee stock plans, net of estimated forfeitures, that is expected to be recognized over a weighted average period of 1.77 years. To the extent the actual forfeiture rate is different from what the Company has anticipated, stock-based compensation related to these awards will be different from the Company’s expectations.

The following summarizes the activity for the Company’s stock incentive plans from March 31, 2016 to March 31, 2019:



Options	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding at March 31, 2016	5,939		$	44.07
Options granted	—		—
Options exercised	(446	)	28.44
Options forfeited	(77	)	51.55
Options expired	(116	)	68.98
Outstanding at March 31, 2017	5,300		44.74
Options granted	—		—
Options exercised	(842	)	23.57
Options forfeited	(26	)	43.30
Options expired	(30	)	68.27
Outstanding at March 31, 2018	4,402		48.64
Options granted	—		—
Options exercised	(1,091	)	28.92
Options forfeited	(15	)	44.55
Options expired	(84	)	80.02
Outstanding at March 31, 2019	3,212		$	54.55	3.55	$	51,133
Exercisable at March 31, 2019	3,203		$	54.58	3.55	$	50,965

The total intrinsic value of options exercised was $39,502, $26,547, and $9,896 in the years ended March 31, 2019, 2018 and 2017, respectively. The Company’s policy is to issue new shares upon exercise of options as the Company does not hold shares in treasury.

Restricted stock unit activity is as follows:



Non-Vested Restricted Stock Units	Number of Awards		Weighted Average Grant Date Fair Value
Non-vested as of March 31, 2016	2,212		$	43.43
Granted	1,333		50.66
Vested	(975	)	51.35
Forfeited	(174	)	43.56
Non-vested as of March 31, 2017	2,396		45.53
Granted	1,235		59.71
Vested	(1,324	)	46.74
Forfeited	(141	)	48.24
Non-vested as of March 31, 2018	2,166		54.13
Granted	1,256		64.65
Vested	(1,276	)	51.38
Forfeited	(315	)	57.76
Non-vested as of March 31, 2019	1,831		$	62.58

The total fair value of the restricted stock units that vested during the years ended March 31, 2019, 2018 and 2017 was $82,957, $76,193 and $50,051, respectively.

The following table presents the stock-based compensation expense included in cost of services revenue, sales and marketing, research and development and general and administrative expenses for the years ended March 31, 2019, 2018 and 2017.



	Year Ended March 31,
	2019		2018		2017
Cost of services revenue	$	2,922	$	3,182	$	3,925
Sales and marketing	34,874		36,917		34,005
Research and development	8,601		8,411		7,335
General and administrative	31,458		25,619		28,663
Stock-based compensation expense	$	77,855	$	74,129	$	73,928

In the year ended March 31, 2019, the table above excludes $2,632 respectively, of stock-based compensation expense related to the Company's restructuring activities described in footnote 12.

Performance Based Awards

In fiscal 2019, the Company granted 72 performance restricted stock units (PSU) to certain executives. Vesting of these awards is contingent upon i) the Company meeting certain company-wide revenue and non-GAAP performance goals (performance-based) in fiscal 2019 and ii) the Company's customary service periods. The awards vest in three annual tranches and have a maximum potential to vest at 200% (144 shares) based on actual fiscal 2019 performance. The related stock-based compensation expense is determined based on the value of the underlying shares on the date of grant and is recognized over the vesting term using the accelerated method. During each financial period, management estimates the probable number of PSUs that would vest until the ultimate achievement of the performance goals is known. Based on the Company's results, the PSUs granted in fiscal 2019 will be eligible to vest at 94%. The awards are included in the restricted stock units table.

Awards with a Market Condition

In fiscal 2019, the Company granted 75 market performance stock units to certain executives, excluding the CEO awards described below. The vesting of these awards is contingent upon the Company meeting certain total shareholder return (TSR) levels as compared to a market index over the next three years. The awards vest in three annual tranches and have a maximum potential to vest at 200% (150 shares) based on TSR performance. The related stock-based compensation expense is determined based on the estimated fair value of the underlying shares on the date of grant and is recognized using the accelerated method over the vesting term. The estimated fair value was calculated using a Monte Carlo simulation model. The weighted average fair value of the awards granted during the year was $81.78 per share. The awards are included in the restricted stock unit table above.

Employee Stock Purchase Plan

The Employee Stock Purchase Plan (the “Purchase Plan”) is a shareholder approved plan under which substantially all employees may purchase the Company’s common stock through payroll deductions at a price equal to 85% of the lower of the fair market values of the stock as of the beginning or the end of six-month offering periods. An employee’s payroll deductions under the Purchase Plan are limited to 10% of the employee’s salary and employees may not purchase more than $25 of stock during any calendar year. Employees purchased 211 shares in exchange for $10,407 of proceeds in fiscal 2019 and 234 shares in exchange for $10,282 of proceeds in fiscal 2018. The Purchase Plan is considered compensatory and the fair value of the discount and look back provision are estimated using the Black-Scholes formula and recognized over the six-month withholding period prior to purchase. The total expense associated with the Purchase Plan for fiscal 2019, 2018 and 2017 was $3,080, $2,848 and $2,620, respectively. As of March 31, 2019, there was approximately $1,161 of unrecognized cost related to the current purchase period of our Employee Stock Purchase Plan.

Impact on Stock Compensation Expense for Changes in Senior Leadership

During fiscal 2019, the Company’s Chief Executive Officer, N. Robert Hammer, announced his retirement effective February 1, 2019. As part of his retirement, the Company modified his equity awards to allow for continued vesting of his restricted stock awards and performance based awards. The Company also increased the timeframe for which his stock options shall remain exercisable to their original ten years expiration date and not thirty days from his last date of employment. The expense related to these modifications was $12,157 for the year ended March 31, 2019. The Company also recorded expenses of $1,208 related to the modification of other senior leadership.

In February 2019, the Company hired Sanjay Mirchandani, as the Company's new Chief Executive Officer replacing N. Robert Hammer. In connection with Mr. Mirchandani’s compensation package the Company granted him 46 market performance stock units. The vesting of these awards is contingent upon the Company meeting certain total shareholder return (TSR) levels as compared to a market index over the next three years. Two-thirds of the awards will vest on the two-year anniversary of the grant date and the remaining third will vest on the three-year anniversary of the grant date. The awards have a maximum potential to vest at 200% (92 shares) based on TSR performance. The related stock-based compensation expense is consistent with our other market performance awards and based on the estimated fair value of the underlying shares on the date of grant. Expense on these awards is recognized using the accelerated method over the vesting term. The estimated fair value was calculated using a Monte Carlo simulation model. The weighted average fair value of these awards was $91.66 per share. These awards are excluded from the Awards with a Market Conditions section above. In addition, Mr. Mirchandani also received 108 time-vesting restricted stock units ("RSUs). Expense for both the market condition awards and time vesting RSUs for the year ended March 31, 2019 was $729. The awards are included in the restricted stock unit table above.

Income Taxes

12 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Impact of U.S. Tax Reform

The Tax Cuts and Jobs Act (the "Act") was enacted on December 22, 2017. The Act reduces the US federal corporate tax rate from 35% to 21%, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings. The most significant impact of the legislation for the Company was the reduction of the value of the Company's net deferred tax assets (which represent future tax benefits) as a result of lowering the U.S. corporate income tax rate from 35% to 21%. The Act also includes a requirement to pay a one-time transition tax on the cumulative value of earnings and profits that were previously not repatriated for U.S. income tax purposes. The Company has concluded that the one-time transition tax is zero. In addition, the Company no longer considers the undistributed earnings held outside of the U.S. by most of its foreign subsidiaries to be indefinitely reinvested.

The Act subjects a US shareholder to tax on Global Intangible Low-Taxed Income (GILTI) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for GILTI, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or to provide for the tax expense related to GILTI in the year the tax is incurred as a period expense only. Because the Company was evaluating the provisions of GILTI as of the fiscal year ended March 31, 2018, it recorded no GILTI-related deferred amounts in the financial statements for the year ended March 31, 2018. After further consideration in the current year, the Company has elected to account for GILTI in the year the tax is incurred, and has recorded an estimate of GILTI as a component of the projected tax provision for the fiscal year ending March 31, 2019.

The Act requires complex computations to be performed that were not previously required in U.S. tax law, judgments to be made in interpretation of the provisions of the Act, estimates in calculations, and the preparation and analysis of information not previously relevant or regularly produced. The U.S. Treasury Department, the Internal Revenue Service ("IRS), and other standard-setting bodies could interpret or issue guidance on how provisions of the Tax Act will be applied or otherwise administered that is different from our current interpretation.

Valuation Allowance

Net deferred tax assets arise due to the recognition of income and expense items for tax purposes, which differ from those used for financial statement purposes. ASC 740, Income Taxes, provides for the recognition of deferred tax assets if realization of such assets is more likely than not. In assessing the need for a valuation allowance, the Company considered all available objective and verifiable evidence both positive and negative, including historical levels of pre-tax income (loss) both on a consolidated basis and tax reporting entity basis, legislative developments, expectations and risks associated with estimates of future pre-tax income, and prudent and feasible tax planning strategies. As a result of this analysis, the Company determined that it is more likely than not that it will not realize the benefits of its gross deferred tax assets and therefore has recorded a valuation allowance to reduce the carrying value of these gross deferred tax assets, net of the impact of the reversal of taxable temporary differences, to zero.

The components of income (loss) before income taxes were as follows:



	Year Ended March 31,
	2019			2018			2017
Domestic	$	(1,762	)	$	(18,159	)	$	(7,860	)
Foreign	12,189			14,659			5,866
	$	10,427		$	(3,500	)	$	(1,994	)

The components of income tax expense (benefit) were as follows:



	Year Ended March 31,
	2019			2018			2017
Current:
Federal	$	(1,772	)	$	(1,036	)	$	6,360
State	103			(383		)	(958		)
Foreign	8,371			7,307			4,818
Deferred:
Federal	144			57,582			(11,520		)
State	—			(4,601		)	(80		)
Foreign	20			(469		)	(106		)
	$	6,866		$	58,400		$	(1,486	)

A reconciliation of the statutory tax rates and the effective tax rates for the years ended March 31, 2019, 2018 and 2017 are as follows:



	Year Ended March 31,
	2019		2018		2017
Statutory federal income tax expense (benefit) rate	21.0	%	(31.6	)%	(35.0	)%
State and local income tax expense, net of federal income tax effect	1.0	%	20.5	%	2.9	%
Foreign earnings taxed at different rates	25.5	%	63.0	%	131.5	%
U.S. tax on Global Intangible Low-Taxed Income	72.9	%	—	%	—	%
Domestic permanent differences	7.8	%	65.6	%	96.6	%
Foreign tax credits	(22.4	)%	(39.2	)%	(67.7	)%
Research credits	(51.8	)%	(83.2	)%	(163.2	)%
Tax reserves	(5.2	)%	(7.0	)%	4.1	%
Valuation allowance	(76.7	)%	1,626.5	%	(31.8	)%
Statutory tax rate changes	(7.8	)%	451.9	%	15.9	%
Stock-based compensation	97.2	%	(377.6	)%	—	%
Other differences, net	4.3	%	(20.3	)%	(27.8	)%
Effective income tax expense (benefit)	65.8	%	1,668.6	%	(74.5	)%

The significant components of the Company’s deferred tax assets are as follows:



	March 31,
	2019			2018
Deferred tax assets:
Net operating losses	$	6,223		$	9,015
Equity investment	1,298			1,162
Stock-based compensation	13,926			31,077
Deferred revenue	15,144			12,670
Tax credits	23,632			15,240
Accrued expenses	2,138			1,400
Allowance for doubtful accounts and other reserves	661			543
Less: valuation allowance	(50,160		)	(58,350		)
Total deferred tax assets	12,862			12,757
Deferred tax liabilities:
Depreciation and amortization	(6,673		)	(6,172		)
Deferred commissions and other	(8,783		)	(10,790		)
Total deferred tax liabilities	$	(15,456	)	$	(16,962	)
Net deferred tax liability	$	(2,594	)	$	(2,430	)

During fiscal 2019, the Company could no longer assert that it had the intent to indefinitely reinvest the earnings and profits of the foreign subsidiaries, with the exception of India. Accordingly, the Company was required to adjust its deferred tax liability for the effects of this change in assertion. This effect was not significant.

At March 31, 2019, the Company had U.S. federal net operating loss (NOL) carry forwards of $20,166. These net operating losses are allowed to be carryforward indefinitely. As of March 31, 2019, the Company had state net operating loss carry forwards which generated a deferred tax asset of $1,319. The State NOLs expire over various years beginning in 2029 depending on the jurisdiction.

The Company also had federal and state research tax credit (R&D credits) carryforwards of approximately $17,508 and $2,187, respectively. The federal research tax credit carryforwards expire from 2025 through 2036, and the state research tax credit carryforwards expire from 2019 through 2023.

The Company conducts business globally and as a result, files income tax returns in the United States and in various state and foreign jurisdictions. In the normal course of business, the Company is subject to examination by taxing authorities throughout the world, including such major jurisdictions are the United States, Australia, Canada, Germany, Netherlands and United Kingdom. The following table summarizes the tax years in the Company’s major tax jurisdictions that remain subject to income tax examinations by tax authorities as of March 31, 2019. The years subject to income tax examination in the Company’s foreign jurisdictions cover the maximum time period with respect to these jurisdictions. Due to NOLs, in some cases the tax years continue to remain subject to examination with respect to such NOLs.



Tax Jurisdiction	Years Subject to Income Tax Examination
U.S. Federal	2018 - Present
Foreign jurisdictions	2013 - Present

The calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax regulations in each of its tax jurisdictions. The number of years with open tax audits varies depending on the tax jurisdiction. A number of years may lapse before a particular matter is audited and finally resolved. A reconciliation of the amounts of unrecognized tax benefits is as follows:



Balance at March 31, 2016	$	1,952
Additions for tax positions related to fiscal 2017	—
Additions for tax positions related to prior years	179
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	—
Foreign currency translation adjustment	(33		)
Balance at March 31, 2017	2,098
Additions for tax positions related to fiscal 2018	—
Additions for tax positions related to prior years	150
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	(397		)
Foreign currency translation adjustment	(111		)
Balance at March 31, 2018	1,740
Additions for tax positions related to fiscal 2019	—
Additions for tax positions related to prior years	547
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	(695		)
Foreign currency translation adjustment	—
Balance at March 31, 2019	1,592

The Company estimates that no significant remaining unrecognized tax benefits will be realized during the fiscal year ending March 31, 2020. Interest and penalties related to unrecognized tax benefits are recorded in income tax expense. In the years ended March 31, 2019, 2018 and 2017, the Company recognized $40, $80 and $61, respectively, of interest and penalties in the Consolidated Statement of Operations.

Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Mar. 31, 2019
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit Plan The Company has a defined contribution plan, as allowed under Section 401(k) of the Internal Revenue Code, covering substantially all employees. Effective January 1, 2012, the Company makes contributions equal to a discretionary percentage of the employee’s contributions determined by the Company. During the years ended March 31, 2019, 2018 and 2017, the Company made contributions of $2,786, $2,959, and $2,998, respectively.

Segment Information

12 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment Information

The Company operates in one segment. The Company’s products and services are sold throughout the world, through direct and indirect sales channels. The Company’s chief operating decision maker (the “CODM”) is the chief executive officer. The CODM makes operating performance assessment and resource allocation decisions on a global basis. The CODM does not receive discrete financial information about asset allocation, expense allocation or profitability by product or geography.

Revenues by geography are based upon the billing address of the customer. All transfers between geographic regions have been eliminated from consolidated revenues. The following table sets forth revenue and long-lived assets by geographic area:



	Year Ended March 31,
	2019		2018		2017
Revenue:
United States	$	379,221	$	377,934	$	365,354
Other	331,736		321,459		279,651
	$	710,957	$	699,393	$	645,005

No individual country other than the United States accounts for 10% or more of revenues in the years ended March 31, 2019, 2018 and 2017. Revenue included in the “Other” caption above primarily relates to the Company’s operations in Europe, Australia, Canada and Asia.



	March 31,
	2019		2018
Long-lived assets:
United States	$	143,591	$	145,918
Other	23,860		25,936
	$	167,451	$	171,854

At March 31, 2019 and 2018 no other individual country, other than the United States, accounts for 10% or more of long-lived assets.

Restructuring

12 Months Ended

Mar. 31, 2019

Restructuring and Related Activities [Abstract]

Restructuring

In fiscal 2019, the Company initiated a restructuring plan to increase efficiency in its sales, marketing and distribution functions as well as reduce costs across all functional areas. During the year ended March 31, 2019, the Company incurred total restructuring charges of $14,765. These restructuring charges relate primarily to severance and related costs associated with headcount reductions and lease abandonment charges associated with two leases. These charges include $2,632 of stock-based compensation related to modifications of existing unvested awards granted to certain employees impacted by the restructuring plan.

The activity in the Company’s restructuring accruals for the year ended March 31, 2019 is summarized as follows:



	Lease abandonment charges			Severance & payroll related charges			Total
Balance at March 31, 2018	$	—		$	—		$	—
Restructuring charges	1,034			14,606			15,640
Payments	(540		)	(12,642		)	(13,182		)
Accrual reversals	—			(875		)	(875		)
Balance at March 31, 2019	$	494		$	1,089		$	1,583

As of March 31, 2019, the outstanding restructuring accruals primarily relate to future severance and lease payments.

Selected Quarterly Financial Data (unaudited)

12 Months Ended

Mar. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (unaudited)



	Quarter Ended
	June 30			September 30			December 31			March 31
Fiscal 2019
Total revenue	$	176,177		$	169,078		$	184,275		$	181,427
Gross margin	148,571			142,205			155,422			147,753
Net income (loss)	(8,567		)	891			13,400			(2,163		)
Net income (loss) per common share:
Basic (1)	$	(0.19	)	$	0.02		$	0.29		$	(0.05	)
Diluted (1)	$	(0.19	)	$	0.02		$	0.28		$	(0.05	)
	Quarter Ended
	June 30			September 30			December 31			March 31
Fiscal 2018
Total revenue	$	165,972		$	168,140		$	180,366		$	184,915
Gross margin	144,311			144,873			155,409			156,648
Net income (loss)	(284		)	(1,010		)	(58,945		)	(1,661		)
Net income (loss) per common share:
Basic (1)	$	(0.01	)	$	(0.02	)	$	(1.30	)	$	(0.04	)
Diluted (1)	$	(0.01	)	$	(0.02	)	$	(1.30	)	$	(0.04	)


(1)	Per common share amounts for the quarters and full year have been calculated separately. Accordingly, quarterly amounts do not add to the annual amount because of differences in the weighted average common shares outstanding during each period used in the basic and diluted calculations.

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Mar. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

Schedule II — Valuation and Qualifying Accounts



	Balance at Beginning of Year		Charged (Credited) to Costs and Expenses			Deductions		Balance at End of Year
	(In thousands)
Year Ended March 31, 2017
Allowance for doubtful accounts	$	315	$	(161	)	$	51	$	103
Valuation allowance for deferred taxes	$	2,772	$	(976	)	$	—	$	1,796
Year Ended March 31, 2018
Allowance for doubtful accounts	$	103	$	25		$	24	$	104
Valuation allowance for deferred taxes	$	1,796	$	56,554		$	—	$	58,350
Year Ended March 31, 2019
Allowance for doubtful accounts	$	104	$	569		$	184	$	489
Valuation allowance for deferred taxes	$	58,350	$	(8,190	)	$	—	$	50,160

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of the Company. All intercompany transactions and balances have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make judgments and estimates that affect the amounts reported in the Company’s consolidated financial statements and the accompanying notes. The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. The amounts of assets and liabilities reported in the Company’s balance sheets and the amounts of revenues and expenses reported for each of its periods presented are affected by estimates and assumptions, which are used for, but not limited to, the accounting for revenue recognition, allowance for doubtful accounts, deferred commissions cost, income taxes and related reserves, stock-based compensation and accounting for research and development costs. Actual results could differ from those estimates.
Revenue, Deferred Commissions Cost, Deferred Revenue, and Shipping and Handling Costs	Deferred Commissions Cost Sales commissions and related payroll taxes earned by the Company's employees are considered incremental and recoverable costs of obtaining a contract with a customer. The Company’s typical contracts include performance obligations related to software licenses, software updates, customer support and other professional services. In these contracts, incremental costs of obtaining a contract are allocated to the performance obligations based on the relative estimated standalone selling prices and then recognized on a systematic basis that is consistent with the transfer of the goods or services to which the asset relates. The Company does not pay commissions on annual renewals of contracts for software updates and customer support for perpetual licenses. The costs allocated to software and products are expensed at the time of sale, when revenue for the functional software license or appliance is recognized. The costs allocated to software updates and customer support for perpetual licenses are amortized ratably over a period of approximately five years, the expected period of benefit of the asset capitalized. The Company currently estimates a period of five years is appropriate based on consideration of historical average customer life and the estimated useful life of the underlying software or appliance sold as part of the transaction. The costs related to professional services are amortized within one quarter following the date of the related software or appliance sale, which is typically the period the related professional services are provided and revenue is recognized. Amortization expense related to these costs is included in Sales and marketing expenses in the accompanying condensed consolidated statements of operations. Costs related to software updates and support for term-based, or subscription software licenses, are limited to the contractual period of the arrangement as the Company intends to pay a commensurate commission upon renewal of the subscription license and related updates and support. Deferred Revenue Deferred revenues represent amounts collected from, or invoiced to, customers in excess of revenues recognized. This results primarily from the billing of annual customer support agreements, and billings for other professional services fees that have not yet been performed by the Company. The value of deferred revenues will increase or decrease based on the timing of invoices and recognition of revenue. Revenue The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, which was adopted on April 1, 2017, using the full retrospective method. For further discussion of the Company's accounting policies related to revenue see Note 3. Shipping and Handling Costs Shipping and handling costs are included in cost of revenues for all periods presented. Information about Contract Balances Amounts collected in advance of services being provided are accounted for as deferred revenue. Nearly all of the Company's deferred revenue balance is related to services revenue, primarily customer support contracts. In some arrangements the Company allows customers to pay for term based software licenses and products over the term of the software license. Amounts recognized as revenue in excess of amounts billed are recorded as unbilled receivables. Unbilled receivables which are anticipated to be invoiced in the next twelve months are included in Accounts receivable on the consolidated balance sheet. Long term unbilled receivables are included in Other assets The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, which was adopted on April 1, 2017, using the full retrospective method. The Company derives revenues from two primary sources: software and products, and services. Software and products revenue includes the Company's software and integrated appliances that combine the Company's software with hardware. Services include customer support (software updates and technical support), consulting, assessment and design services, installation services and customer education. A typical contract includes both licenses and services. The Company’s software licenses typically provide for a perpetual right to use the Company’s software. The Company also sells term-based software licenses that expire, which are referred to as subscription arrangements. The Company does not customize its software and installation services are not required. The software is delivered before related services are provided and is functional without professional services, updates and technical support. The Company has concluded that its software license is functional intellectual property that is distinct as the user can benefit from the software on its own. Software revenue is typically recognized when the software is delivered and/or made available for download as this is the point the user of the software can direct the use of, and obtain substantially all of the remaining benefits from the functional intellectual property. The Company does not recognize software revenue related to the renewal of subscription software licenses earlier than the beginning of the subscription period. In fiscal 2018, the Company also started selling appliances that integrate the Company's software with hardware and address a wide-range of business needs and use cases, ranging from support for remote or branch offices with limited IT staff up to large corporate data centers. Revenue related to appliances is recognized when control of the appliances passes to the customer; typically upon delivery. Revenue to date related to appliances has not been significant. Services revenue includes revenue from customer support and other professional services. Customer support includes software updates on a when-and-if-available basis, telephone support, integrated web-based support and bug fixes or patches. The Company sells its customer support contracts as a percentage of net software purchases the support is related to. Customer support revenue is recognized ratably over the term of the customer support agreement, which is typically one year. The Company’s other professional services include consulting, assessment and design services, installation services and customer education. Customer education services include courses taught by the Company’s instructors or third-party contractors. Revenue related to other professional services and customer education services is typically recognized as the services are performed. Most of the Company’s contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. Standalone selling prices of software and appliances are typically estimated using the residual approach. Standalone selling prices of services are typically estimated based on observable transactions when these services are sold on a standalone basis.
Net Income per Common Share	Net Income per Common Share Basic net income per common share is computed by dividing net income by the weighted average number of common shares during the period. Diluted net income per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options, vesting of restricted stock units and shares to be purchased under the Employee Stock Purchase Plan. The dilutive effect of such potential common shares is reflected in diluted earnings per share by application of the treasury stock method.
Software Development Costs	Software Development Costs Research and development expenditures are charged to operations as incurred. Based on the Company’s software development process, technological feasibility is established upon completion of a working model, which also requires certification and extensive testing. Costs incurred by the Company between completion of the working model and the point at which the product is ready for general release are immaterial.
Trade and Other Receivables	Trade and Other Receivables Trade and other receivables are primarily comprised of trade receivables that are recorded at the invoice amount, net of an allowance for doubtful accounts, which is not material. Unbilled receivables represent amounts for which revenue has been recognized but which have not yet been invoiced to the customer. The current portion of unbilled receivables is included in Trade accounts receivable on the consolidated balance sheet. Long term unbilled receivables are included in Other assets.
Accounting for Income Taxes	Accounting for Income Taxes The Company accounts for income taxes in accordance with ASC Topic 740, “Income Taxes” (ASC 740). The provision for income taxes and effective tax rates are calculated by legal entity and jurisdiction and are based on a number of factors, including the level of pre-tax earnings, income tax planning strategies, differences between tax laws and accounting rules, statutory tax rates and credits, uncertain tax positions and valuation allowances. The Company uses significant judgment and estimates in evaluating tax positions. The effective tax rate in a given financial statement period may be materially impacted by changes in the mix and level of earnings by taxing jurisdiction. Under ASC 740, deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when, in the Company's judgment, it is more likely than not that deferred tax assets will not be realized. In assessing the need for a valuation allowance, the Company weighs the available positive and negative evidence, including historical levels of pre-tax income, legislative developments, expectations and risks associated with estimates of future pre-tax income, and prudent and feasible tax planning strategies.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with maturities of three months or less at the date of purchase to be cash equivalents. As of March 31, 2019, the Company’s cash and cash equivalents balance consisted primarily of money market funds.
Short-term Investments	Short-term Investments Short-term investments consist of investments with maturities of twelve months or less that do not meet the criteria to be cash equivalents. The company determines classification of the investment as trading, available-for-sale or held-to-maturity at the time of purchase and reevaluates classification whenever changes in circumstances indicate changes in classification may be necessary. The Company’s current short-term investments are classified as held-to-maturity. Held-to-maturity investments consist of securities that the Company has the intent and ability to retain until maturity. Held-to-maturity investments are initially recorded at cost and adjusted for the amortization of discounts from the date of purchase through maturity. Income related to investments is recorded as interest income in the Consolidated Statement of Operations. Cash inflows and outflows related to the sale, maturity and purchase of investments are classified as investing activities in the Company’s Consolidated Statements of Cash Flows.
Concentration of Credit Risk	Concentration of Credit Risk The Company grants credit to customers in a wide variety of industries worldwide and generally does not require collateral. Credit losses relating to these customers have been minimal.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts of the Company’s cash and cash equivalents, accounts receivable and accounts payable approximate their fair values due to the short-term maturity of these instruments. As of March 31, 2019 and 2018, the Company’s short-term investments balance consisted of U.S. Treasury Bills. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for such asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value should maximize the use of observable inputs and minimize the use of unobservable inputs. To measure fair value, the Company uses the following fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable: Level 1 — Quoted prices in active markets for identical assets or liabilities. Level 2 — Inputs other than Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data by correlation or other means. Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
Property and Equipment	Property and Equipment Property and equipment are stated at cost, less accumulated depreciation and amortization. Land is not depreciated. The Company provides for depreciation on a straight-line basis over the estimated useful lives of the assets. The depreciable assets that comprise the Company's owned headquarters classified as Buildings are being depreciated over lives ranging from ten to sixty years. Computer and related equipment is generally depreciated over eighteen months to three years and furniture and fixtures are generally depreciated over three to twelve years. Leasehold improvements are amortized over the shorter of the useful life of the improvement or the term of the related lease. Expenditures for routine maintenance and repairs are charged against operations. Major replacements, improvements and additions are capitalized.
Asset Retirement Obligation	Asset Retirement Obligation A liability for the fair value of an asset retirement obligation and corresponding increase to the carrying value of the related leasehold improvements are recorded at the time leasehold improvements are acquired. The Company maintains certain office space for which the lease agreement requires that the Company return the office space to its original condition upon vacating the premises.
Long-Lived Assets	Long-Lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. To determine the recoverability of its long-lived assets, the Company evaluates the estimated future undiscounted cash flows that are directly associated with, and that are expected to arise as a direct result of, the use and eventual disposition of the long-lived asset. If the estimated future undiscounted cash flows demonstrate that recoverability is not probable, an impairment loss would be recognized. An impairment loss would be calculated based on the excess carrying amount of the long-lived asset over the long-lived asset’s fair value. The fair value would be determined based on valuation techniques such as a comparison to fair values of similar assets.
Accounting for Stock-Based Compensation	Accounting for Stock-Based Compensation The Company utilizes the Black-Scholes pricing model to determine the fair value of non-qualified stock options on the dates of grant. Restricted stock units without a market condition are measured based on the fair market values of the underlying stock on the date of grant. The Company recognizes stock-based compensation using the straight-line method for all stock awards that don't include a market or performance condition.
Share Repurchases	Share Repurchases The Company considers all shares repurchased as canceled shares restored to the status of authorized but unissued shares on the trade date. The aggregate purchase price of the shares of the Company’s common stock repurchased is reflected as a reduction to Stockholders’ Equity. The Company accounts for shares repurchased as an adjustment to common stock (at par value) with the excess repurchase price allocated between Additional Paid-in Capital and Accumulated Deficit.
Sales Tax	Sales Tax The Company records revenue net of sales tax.
Advertising Costs	Advertising Costs The Company expenses advertising costs as incurred.
Foreign Currency Translation	Foreign Currency Translation The functional currencies of the Company’s foreign operations are deemed to be the local country’s currency. Assets and liabilities of the Company’s international subsidiaries are translated at their respective period-end exchange rates, and revenues and expenses are translated at average currency exchange rates for the period. The resulting balance sheet translation adjustments are included in Other Comprehensive Loss and are reflected as a separate component of Stockholders’ Equity. Foreign currency transaction gains and losses are recorded in “General and administrative expenses” in the Consolidated Statements of Operations.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) is defined to include all changes in equity, except those resulting from investments by stockholders and distribution to stockholders.
Recently Issued Accounting Standards	Recently Issued Accounting Standards Leases In February 2016, the FASB issued ASU 2016-02 “Leases (Topic 842)” (“ASU 2016-02”). Under ASU 2016-02, a lessee will recognize a liability to make lease payments (the lease liability) and a right-to-use asset representing its right to use the underlying asset for the lease term. The Company will adopt this ASU in the first quarter of fiscal 2020 and will apply it at the beginning of the period of adoption with the cumulative effect of applying the new rules recognized then. As part of its assessment, the Company performed a scoping exercise and determined the lease population. Based on this assessment, the Company anticipates the most significant impact will be the recognition of right-of-use assets and lease liabilities on its consolidated balance sheet, related to operating leases. This impact on its consolidated balance sheet is estimated to be less than 10% of total assets and liabilities. Furthermore, the Company expects no significant impact on its consolidated income statement. Additionally, the Company is in the process of finalizing the implementation of a lease accounting system and refining internal controls and processes related to both the implementation and ongoing compliance of the new guidance. Credit Losses on Financial Instruments In June 2016, the FASB issued ASU 2016-13 “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (ASU 2016-13). The standard amends guidance on the impairment of financial instruments. The ASU estimates credit losses based on expected losses and provides for a simplified accounting model for purchased financial assets with credit deterioration. The standard requires a modified retrospective basis adoption through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The amendments of this ASU are effective for the Company's fiscal 2021, with early adoption permitted. The Company is currently assessing the impact the adoption of ASU 2016-13 will have on the financial statements. There have been no other accounting pronouncements issued but not yet adopted by the Company which are expected to have a material impact on the Company’s financial position, results of operations or cash flows. Recently Issued Accounting Standards Leases In February 2016, the FASB issued ASU 2016-02 “Leases (Topic 842)” (“ASU 2016-02”). Under ASU 2016-02, a lessee will recognize a liability to make lease payments (the lease liability) and a right-to-use asset representing its right to use the underlying asset for the lease term. The Company will adopt this ASU in the first quarter of fiscal 2020 and will apply it at the beginning of the period of adoption with the cumulative effect of applying the new rules recognized then. As part of its assessment, the Company performed a scoping exercise and determined the lease population. Based on this assessment, the Company anticipates the most significant impact will be the recognition of right-of-use assets and lease liabilities on its consolidated balance sheet, related to operating leases. This impact on its consolidated balance sheet is estimated to be less than 10% of total assets and liabilities. Furthermore, the Company expects no significant impact on its consolidated income statement. Additionally, the Company is in the process of finalizing the implementation of a lease accounting system and refining internal controls and processes related to both the implementation and ongoing compliance of the new guidance. Credit Losses on Financial Instruments In June 2016, the FASB issued ASU 2016-13 “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (ASU 2016-13). The standard amends guidance on the impairment of financial instruments. The ASU estimates credit losses based on expected losses and provides for a simplified accounting model for purchased financial assets with credit deterioration. The standard requires a modified retrospective basis adoption through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The amendments of this ASU are effective for the Company's fiscal 2021, with early adoption permitted. The Company is currently assessing the impact the adoption of ASU 2016-13 will have on the financial statements. There have been no other accounting pronouncements issued but not yet adopted by the Company which are expected to have a material impact on the Company’s financial position, results of operations or cash flows.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Computation of Basic and Diluted Net Income Per Common Share

The following table sets forth the reconciliation of basic and diluted common share:



	Year Ended March 31,
	2019	2018	2017
Basic weighted average shares outstanding	45,827	45,242	44,700
Dilutive effect of stock options, restricted stock units, and employee stock purchase plan	1,774	—	—
Diluted weighted average shares outstanding	47,601	45,242	44,700

Summary of Potential Outstanding Common Stock Equivalents



	Year Ended March 31,
	2019	2018	2017
Stock options, restricted stock units, and shares under the employee stock purchase plan	998	7,312	8,106

Financial Assets Measured At Fair Value On Recurring Basis

The following table summarizes the composition of the Company’s financial assets measured at fair value on a recurring basis at March 31, 2019 and March 31, 2018:



March 31, 2019	Level 1		Level 2		Level 3	Total
Cash equivalents	$	102,702	—		—	$	102,702
Short-term investments	—		$	131,937	—	$	131,937



March 31, 2018	Level 1		Level 2		Level 3	Total
Cash equivalents	$	43,545	—		—	$	43,545
Short-term investments	—		$	132,263	—	$	132,263

Revenue (Tables)

12 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The Company’s typical performance obligations include the following:



Performance Obligation	When Performance Obligation is Typically Satisfied	When Payment is Typically Due	How Standalone Selling Price is Typically Estimated
Software and Products Revenue
Software Licenses	Upon shipment or made available for download (point in time)	Within 90 days of shipment except for certain subscription licenses which are paid for over time	Residual approach
Appliances	When control of the appliances passes to the customer; typically upon delivery	Within 90 days of delivery	Residual approach
Customer Support Revenue
Software Updates	Ratably over the course of the support contract (over time)	At the beginning of the contract period	Observable in renewal transactions
Customer Support	Ratably over the course of the support contract (over time)	At the beginning of the contract period	Observable in renewal transactions
Professional Services
Other Professional Services (except for education services)	As work is performed (over time)	Within 90 days of services being performed	Observable in transactions without multiple performance obligations
Education Services	When the class is taught (point in time)	Within 90 days of services being performed	Observable in transactions without multiple performance obligations

Disaggregation of Revenue



	Year Ended March 31, 2019
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	170,114	$	95,913	$	43,872	$	309,899
Customer Support Revenue	237,190		82,895		38,662		358,747
Professional Services	23,076		12,380		6,855		42,311
Total Revenue	$	430,380	$	191,188	$	89,389	$	710,957



	Year Ended March 31, 2018
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	167,858	$	100,452	$	43,435	$	311,745
Customer Support Revenue	233,991		75,807		36,257		346,055
Professional Services	23,453		11,289		6,851		41,593
Total Revenue	$	425,302	$	187,548	$	86,543	$	699,393



	Year Ended March 31, 2017
	Americas		EMEA		APAC		Total
Software and Products Revenue	$	168,243	$	82,393	$	40,032	$	290,668
Customer Support Revenue	216,656		65,732		32,466		314,854
Professional Services	22,704		11,364		5,415		39,483
Total Revenue	$	407,603	$	159,489	$	77,913	$	645,005

Contract with Customer, Asset and Liability

The opening and closing balances of the Company’s accounts receivable, unbilled receivables, and deferred revenues are as follows:



	Accounts Receivable		Unbilled Receivable (current)		Unbilled Receivable (long-term)		Deferred Revenue (current)			Deferred Revenue (long-term)
Opening Balance as of March 31, 2018	$	152,219	$	9,900	$	4,380	$	241,113		$	84,661
Increase/(decrease), net	9,351		5,366		2,836		(2,674		)	14,596
Ending Balance as of March 31, 2019	$	161,570	$	15,266	$	7,216	$	238,439		$	99,257

Property and Equipment (Tables)

12 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consist of the following:



	March 31,
	2019			2018
Land	$	9,445		$	9,445
Buildings	103,244			103,244
Computers, servers and other equipment	38,551			37,132
Furniture and fixtures	15,184			15,594
Leasehold improvements	10,251			10,143
Purchased software	1,473			1,425
Construction in process	2,091			57
	180,239			177,040
Less: Accumulated depreciation and amortization	(57,523		)	(48,428		)
	$	122,716		$	128,612

Accrued Liabilities (Tables)

12 Months Ended

Mar. 31, 2019

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consist of the following:



	March 31,
	2019		2018
Compensation and related payroll taxes	$	48,332	$	46,192
Other	37,389		36,107
	$	85,721	$	82,299

Commitments and Contingencies (Tables)

12 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments under all Operating Leases

Future minimum lease payments under all operating leases at March 31, 2019 are as follows:



Year Ending March 31,
2020	$	9,008
2021	6,634
2022	4,273
2023	2,228
2024 and thereafter	1,530
	$	23,673

Stock Plans (Tables)

12 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock Option Activity

The following summarizes the activity for the Company’s stock incentive plans from March 31, 2016 to March 31, 2019:



Options	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding at March 31, 2016	5,939		$	44.07
Options granted	—		—
Options exercised	(446	)	28.44
Options forfeited	(77	)	51.55
Options expired	(116	)	68.98
Outstanding at March 31, 2017	5,300		44.74
Options granted	—		—
Options exercised	(842	)	23.57
Options forfeited	(26	)	43.30
Options expired	(30	)	68.27
Outstanding at March 31, 2018	4,402		48.64
Options granted	—		—
Options exercised	(1,091	)	28.92
Options forfeited	(15	)	44.55
Options expired	(84	)	80.02
Outstanding at March 31, 2019	3,212		$	54.55	3.55	$	51,133
Exercisable at March 31, 2019	3,203		$	54.58	3.55	$	50,965

Schedule of Restricted Stock Unit Activity

Restricted stock unit activity is as follows:



Non-Vested Restricted Stock Units	Number of Awards		Weighted Average Grant Date Fair Value
Non-vested as of March 31, 2016	2,212		$	43.43
Granted	1,333		50.66
Vested	(975	)	51.35
Forfeited	(174	)	43.56
Non-vested as of March 31, 2017	2,396		45.53
Granted	1,235		59.71
Vested	(1,324	)	46.74
Forfeited	(141	)	48.24
Non-vested as of March 31, 2018	2,166		54.13
Granted	1,256		64.65
Vested	(1,276	)	51.38
Forfeited	(315	)	57.76
Non-vested as of March 31, 2019	1,831		$	62.58

Stock-Based Compensation Expense



	Year Ended March 31,
	2019		2018		2017
Cost of services revenue	$	2,922	$	3,182	$	3,925
Sales and marketing	34,874		36,917		34,005
Research and development	8,601		8,411		7,335
General and administrative	31,458		25,619		28,663
Stock-based compensation expense	$	77,855	$	74,129	$	73,928

Income Taxes (Tables)

12 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Components of Income Before Income Taxes

The components of income (loss) before income taxes were as follows:



	Year Ended March 31,
	2019			2018			2017
Domestic	$	(1,762	)	$	(18,159	)	$	(7,860	)
Foreign	12,189			14,659			5,866
	$	10,427		$	(3,500	)	$	(1,994	)

Components of Income Tax Expense (Benefit)

The components of income tax expense (benefit) were as follows:



	Year Ended March 31,
	2019			2018			2017
Current:
Federal	$	(1,772	)	$	(1,036	)	$	6,360
State	103			(383		)	(958		)
Foreign	8,371			7,307			4,818
Deferred:
Federal	144			57,582			(11,520		)
State	—			(4,601		)	(80		)
Foreign	20			(469		)	(106		)
	$	6,866		$	58,400		$	(1,486	)

Reconciliation of Statutory Tax Rates and Effective Tax Rates

A reconciliation of the statutory tax rates and the effective tax rates for the years ended March 31, 2019, 2018 and 2017 are as follows:



	Year Ended March 31,
	2019		2018		2017
Statutory federal income tax expense (benefit) rate	21.0	%	(31.6	)%	(35.0	)%
State and local income tax expense, net of federal income tax effect	1.0	%	20.5	%	2.9	%
Foreign earnings taxed at different rates	25.5	%	63.0	%	131.5	%
U.S. tax on Global Intangible Low-Taxed Income	72.9	%	—	%	—	%
Domestic permanent differences	7.8	%	65.6	%	96.6	%
Foreign tax credits	(22.4	)%	(39.2	)%	(67.7	)%
Research credits	(51.8	)%	(83.2	)%	(163.2	)%
Tax reserves	(5.2	)%	(7.0	)%	4.1	%
Valuation allowance	(76.7	)%	1,626.5	%	(31.8	)%
Statutory tax rate changes	(7.8	)%	451.9	%	15.9	%
Stock-based compensation	97.2	%	(377.6	)%	—	%
Other differences, net	4.3	%	(20.3	)%	(27.8	)%
Effective income tax expense (benefit)	65.8	%	1,668.6	%	(74.5	)%

Components of Deferred Tax Assets

The significant components of the Company’s deferred tax assets are as follows:



	March 31,
	2019			2018
Deferred tax assets:
Net operating losses	$	6,223		$	9,015
Equity investment	1,298			1,162
Stock-based compensation	13,926			31,077
Deferred revenue	15,144			12,670
Tax credits	23,632			15,240
Accrued expenses	2,138			1,400
Allowance for doubtful accounts and other reserves	661			543
Less: valuation allowance	(50,160		)	(58,350		)
Total deferred tax assets	12,862			12,757
Deferred tax liabilities:
Depreciation and amortization	(6,673		)	(6,172		)
Deferred commissions and other	(8,783		)	(10,790		)
Total deferred tax liabilities	$	(15,456	)	$	(16,962	)
Net deferred tax liability	$	(2,594	)	$	(2,430	)

Schedule of Tax Years Subject to Income Tax Examination

The following table summarizes the tax years in the Company’s major tax jurisdictions that remain subject to income tax examinations by tax authorities as of March 31, 2019. The years subject to income tax examination in the Company’s foreign jurisdictions cover the maximum time period with respect to these jurisdictions. Due to NOLs, in some cases the tax years continue to remain subject to examination with respect to such NOLs.



Tax Jurisdiction	Years Subject to Income Tax Examination
U.S. Federal	2018 - Present
Foreign jurisdictions	2013 - Present

Reconciliation of Amounts of Unrecognized Tax Benefits

A reconciliation of the amounts of unrecognized tax benefits is as follows:



Balance at March 31, 2016	$	1,952
Additions for tax positions related to fiscal 2017	—
Additions for tax positions related to prior years	179
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	—
Foreign currency translation adjustment	(33		)
Balance at March 31, 2017	2,098
Additions for tax positions related to fiscal 2018	—
Additions for tax positions related to prior years	150
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	(397		)
Foreign currency translation adjustment	(111		)
Balance at March 31, 2018	1,740
Additions for tax positions related to fiscal 2019	—
Additions for tax positions related to prior years	547
Settlements and effective settlements with tax authorities and remeasurements	—
Reductions related to the expiration of statutes of limitations	(695		)
Foreign currency translation adjustment	—
Balance at March 31, 2019	1,592

Segment Information (Tables)

12 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of Revenue by Geographic Area

The following table sets forth revenue and long-lived assets by geographic area:



	Year Ended March 31,
	2019		2018		2017
Revenue:
United States	$	379,221	$	377,934	$	365,354
Other	331,736		321,459		279,651
	$	710,957	$	699,393	$	645,005

Schedule of Long-Lived Assets by Geographic Area



	March 31,
	2019		2018
Long-lived assets:
United States	$	143,591	$	145,918
Other	23,860		25,936
	$	167,451	$	171,854

Restructuring (Tables)

12 Months Ended

Mar. 31, 2019

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Accruals

The activity in the Company’s restructuring accruals for the year ended March 31, 2019 is summarized as follows:



	Lease abandonment charges			Severance & payroll related charges			Total
Balance at March 31, 2018	$	—		$	—		$	—
Restructuring charges	1,034			14,606			15,640
Payments	(540		)	(12,642		)	(13,182		)
Accrual reversals	—			(875		)	(875		)
Balance at March 31, 2019	$	494		$	1,089		$	1,583

Selected Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Mar. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Selected Quarterly Financial Data



	Quarter Ended
	June 30			September 30			December 31			March 31
Fiscal 2019
Total revenue	$	176,177		$	169,078		$	184,275		$	181,427
Gross margin	148,571			142,205			155,422			147,753
Net income (loss)	(8,567		)	891			13,400			(2,163		)
Net income (loss) per common share:
Basic (1)	$	(0.19	)	$	0.02		$	0.29		$	(0.05	)
Diluted (1)	$	(0.19	)	$	0.02		$	0.28		$	(0.05	)
	Quarter Ended
	June 30			September 30			December 31			March 31
Fiscal 2018
Total revenue	$	165,972		$	168,140		$	180,366		$	184,915
Gross margin	144,311			144,873			155,409			156,648
Net income (loss)	(284		)	(1,010		)	(58,945		)	(1,661		)
Net income (loss) per common share:
Basic (1)	$	(0.01	)	$	(0.02	)	$	(1.30	)	$	(0.04	)
Diluted (1)	$	(0.01	)	$	(0.02	)	$	(1.30	)	$	(0.04	)


(1)	Per common share amounts for the quarters and full year have been calculated separately. Accordingly, quarterly amounts do not add to the annual amount because of differences in the weighted average common shares outstanding during each period used in the basic and diluted calculations.

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	4 Months Ended	12 Months Ended
	Jul. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Research and development		$ 92,647,000	$ 91,030,000	$ 79,558,000
General and administrative		100,946,000	90,709,000	88,929,000
Asset retirement obligation		1,479,000	1,303,000
Asset impairment charges		$ 0	0	0
Software updates and customer support costs amortization period		5 years
Advertising expenses		$ 4,678,000	5,704,000	7,816,000
Net foreign currency transaction gain (loss)		$ 984,000	$ 109,000	$ 644,000
Director \| Director on Company's board of directors hired as CEO of Rackspace, Inc.
Summary Of Significant Accounting Policies [Line Items]
Revenue from related party	$ 631,000
Minimum \| Buildings
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		10 years
Minimum \| Computers, servers and other equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		18 months
Minimum \| Furniture and fixtures
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		3 years
Maximum \| Buildings
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		60 years
Maximum \| Computers, servers and other equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		3 years
Maximum \| Furniture and fixtures
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, depreciation period (in years)		12 years
Arrow \| Revenue
Summary Of Significant Accounting Policies [Line Items]
Concentration percentage		38.00%	36.00%	36.00%
Customer Concentration Risk \| Arrow \| Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Concentration percentage		38.00%	38.00%
Adjustment \| Immaterial error related to the classification of legal fees
Summary Of Significant Accounting Policies [Line Items]
Research and development			$ 3,134,000	$ 3,985,000
General and administrative			$ (3,134,000)	$ (3,985,000)

Summary of Significant Accounting Policies - Computation of Diluted Net Income Per Common Share (Detail) - shares shares in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Diluted net income (loss) per common share:
Basic weighted average shares outstanding (shares)	45,827	45,242	44,700
Dilutive effect of stock options, restricted stock units, and employee stock purchase plan (in shares)	1,774	0	0
Diluted weighted average shares outstanding (in shares)	47,601	45,242	44,700

Summary of Significant Accounting Policies - Summary of Potential Outstanding Common Stock Equivalents (Detail) - shares shares in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Accounting Policies [Abstract]
Stock options, restricted stock units, and shares under the employee stock purchase plan (in shares)	998	7,312	8,106

Summary of Significant Accounting Policies - Summary of Fair Value of Financial Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 102,702	$ 43,545
Short-term investments	131,937	132,263
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	102,702	43,545
Short-term investments	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term investments	131,937	132,263
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term investments	$ 0	$ 0

Revenue - Additional Information (Detail) $ in Thousands	12 Months Ended
Revenue - Additional Information (Detail) $ in Thousands	Mar. 31, 2019 USD ($) revenue_source segment
Revenue from Contract with Customer [Abstract]
Sources of primary revenue \| revenue_source	2
Customer support agreement	1 year
Number of operating segments \| segment	1
Revenue recognized in period, included in opening deferred revenue balance	$ 238,603
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized from remaining performance obligations	27,956
Software and Products Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized from remaining performance obligations	$ 3,137

Revenue - Performance Obligations (Detail)	12 Months Ended
Revenue - Performance Obligations (Detail)	Mar. 31, 2019
Software, licenses
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation, expected payment terms	90 days
Software, appliances
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation, expected payment terms	90 days
Professional Services, other
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation, expected payment terms	90 days
Professional Services, education services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation, expected payment terms	90 days

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Total revenues	$ 710,957	$ 699,393	$ 645,005
Americas
Disaggregation of Revenue [Line Items]
Total revenues	430,380	425,302	407,603
EMEA
Disaggregation of Revenue [Line Items]
Total revenues	191,188	187,548	159,489
APAC
Disaggregation of Revenue [Line Items]
Total revenues	89,389	86,543	77,913
Software and Products Revenue
Disaggregation of Revenue [Line Items]
Total revenues	309,899	311,745	290,668
Software and Products Revenue \| Americas
Disaggregation of Revenue [Line Items]
Total revenues	170,114	167,858	168,243
Software and Products Revenue \| EMEA
Disaggregation of Revenue [Line Items]
Total revenues	95,913	100,452	82,393
Software and Products Revenue \| APAC
Disaggregation of Revenue [Line Items]
Total revenues	43,872	43,435	40,032
Customer Support Revenue
Disaggregation of Revenue [Line Items]
Total revenues	358,747	346,055	314,854
Customer Support Revenue \| Americas
Disaggregation of Revenue [Line Items]
Total revenues	237,190	233,991	216,656
Customer Support Revenue \| EMEA
Disaggregation of Revenue [Line Items]
Total revenues	82,895	75,807	65,732
Customer Support Revenue \| APAC
Disaggregation of Revenue [Line Items]
Total revenues	38,662	36,257	32,466
Professional Services
Disaggregation of Revenue [Line Items]
Total revenues	42,311	41,593	39,483
Professional Services \| Americas
Disaggregation of Revenue [Line Items]
Total revenues	23,076	23,453	22,704
Professional Services \| EMEA
Disaggregation of Revenue [Line Items]
Total revenues	12,380	11,289	11,364
Professional Services \| APAC
Disaggregation of Revenue [Line Items]
Total revenues	$ 6,855	$ 6,851	$ 5,415

Revenue - Opening and Closing Balances (Receivables) (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($)
Trade accounts receivable
Accounts Receivable [Roll Forward]
Opening Balance as of March 31, 2017	$ 152,219
Increase/(decrease), net	9,351
Ending Balance as of March 31, 2018	161,570
Unbilled Receivable (current) [Roll Forward]
Opening Balance as of March 31, 2017	9,900
Increase/(decrease), net	5,366
Ending Balance as of March 31, 2018	15,266
Other assets
Unbilled Receivable (long-term) [Roll Forward]
Opening Balance as of March 31, 2017	4,380
Increase/(decrease), net	2,836
Ending Balance as of March 31, 2018	$ 7,216

Revenue - Opening and Closing Balances (Deferred Revenue) (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($)
Contract With Customer, Liability, Current [Roll Forward]
Opening Balance as of March 31, 2017	$ 241,113
Ending Balance as of March 31, 2018	238,439
Contract With Customer, Liability, Noncurrent [Roll Forward]
Opening Balance as of March 31, 2017	84,661
Ending Balance as of March 31, 2018	99,257
Deferred revenue
Contract With Customer, Liability, Current [Roll Forward]
Opening Balance as of March 31, 2017	241,113
Increase/(decrease), net	(2,674)
Ending Balance as of March 31, 2018	238,439
Deferred revenue, less current portion
Contract With Customer, Liability, Noncurrent [Roll Forward]
Opening Balance as of March 31, 2017	84,661
Increase/(decrease), net	14,596
Ending Balance as of March 31, 2018	$ 99,257

Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 180,239	$ 177,040
Less: Accumulated depreciation and amortization	(57,523)	(48,428)
Property and equipment, net	122,716	128,612
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,445	9,445
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	103,244	103,244
Computers, servers and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	38,551	37,132
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,184	15,594
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,251	10,143
Purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,473	1,425
Construction in process
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,091	$ 57

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 12,060	$ 11,785	$ 10,232
Depreciation and amortization expense		$ 11,217	$ 9,980

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Payables and Accruals [Abstract]
Compensation and related payroll taxes	$ 48,332	$ 46,192
Other	37,389	36,107
Total accrued liabilities	$ 85,721	$ 82,299

Commitments and Contingencies - Future Minimum Lease Payments Under All Operating Leases (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020	$ 9,008
2021	6,634
2022	4,273
2023	2,228
2024 and thereafter	1,530
Future minimum lease payments, Total	$ 23,673

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Rent expenses	$ 11,474,000	$ 12,215,000	$ 10,377,000
Non-cancellable purchase commitments, 2020	16,748,000
Non-cancellable purchase commitments, 2021	3,221,000
Non-cancellable purchase commitments, 2022	447,000
Non-cancellable purchase commitments, 2023	104,000
Non-cancellable purchase commitments, Total for all periods through fiscal 2023	20,520,000
Royalty expense	$ 12,319,000	4,462,000	2,646,000
Maximum software warranty period (in days)	90 days
Product warranty accrual	$ 0	$ 0	$ 0

Capitalization - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Apr. 18, 2019
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	45,582	45,118
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Amount of common stock repurchased	$ 132,697,000	$ 112,218,000	$ 49,998,000
Restricted Stock Units
Class of Stock [Line Items]
Options outstanding (in shares)	4,736
Common Stock Repurchased
Class of Stock [Line Items]
Amount of common stock repurchased	$ 132,697,000
Number of shares repurchased (in shares)	2,115
Common Stock Repurchased \| Subsequent Event
Class of Stock [Line Items]
Share repurchase program, authorized amount available				$ 200,000,000

Stock Plans - Additional Information (Detail) shares in Thousands, $ in Thousands		12 Months Ended
	Aug. 23, 2018 shares	Mar. 31, 2019 USD ($) stock_plan shares	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense \| $		$ 81,833
Awards expected to be recognized over a weighted average period (in years)		1 year 9 months 7 days
Total intrinsic value of options exercised \| $		$ 39,502	$ 26,547	$ 9,896
Total fair value of restricted stock units - vested \| $		$ 82,957	$ 76,193	$ 50,051
Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted, vesting period		3 years
2016 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock that may be delivered under plan (in shares) \| shares	5,550
Addition shares authorized (in shares) \| shares	2,000
Options available for future grant (in shares) \| shares		2,781
2006 Long-Term Stock Inventive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock incentive plans \| stock_plan		1

Stock Plans - Activity for Company's Two Stock Incentive Plans (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Number of Options
Number of Options, Outstanding beginning balance (in shares)	4,402	5,300	5,939
Number of Options, Options granted (in shares)	0	0	0
Number of Options, Options exercised (in shares)	(1,091)	(842)	(446)
Number of Options, Options forfeited (in shares)	(15)	(26)	(77)
Number of Options, Options expired (in shares)	(84)	(30)	(116)
Number of Options, Outstanding ending balance (in shares)	3,212	4,402	5,300
Number of Options, Exercisable at March 31, 2019 (in shares)	3,203
Weighted- Average Exercise Price
Weighted-Average Exercise Price, Outstanding beginning balance (in dollars per share)	$ 48.64	$ 44.74	$ 44.07
Weighted-Average Exercise Price, Options granted (in dollars per share)	0.00	0.00	0.00
Weighted-Average Exercise Price, Options exercised (in dollars per share)	28.92	23.57	28.44
Weighted-Average Exercise Price, Options forfeited (in dollars per share)	44.55	43.30	51.55
Weighted-Average Exercise Price, Options expired (in dollars per share)	80.02	68.27	68.98
Weighted-Average Exercise Price, Outstanding ending balance (in dollars per share)	54.55	$ 48.64	$ 44.74
Weighted-Average Exercise Price, Exercisable at March 31, 2019 (in dollars per share)	$ 54.58
Weighted- Average Remaining Contractual Term (Years)
Weighted-Average Remaining Contractual Term, Outstanding at March 31, 2019 (in years)	3 years 6 months 18 days
Weighted-Average Remaining Contractual Term, Exercisable at March 31, 2019 (in years)	3 years 6 months 18 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Outstanding at March 31, 2019	$ 51,133
Aggregate Intrinsic Value, Exercisable at March 31, 2019	$ 50,965

Stock Plans - Restricted Stock Unit Activity (Detail) - Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Number of Awards
Number of Awards, Non-vested beginning balance (in shares)	2,166	2,396	2,212
Number of Awards, Granted (in shares)	1,256	1,235	1,333
Number of Awards, Vested (in shares)	(1,276)	(1,324)	(975)
Number of Awards, Forfeited (in shares)	(315)	(141)	(174)
Number of Awards, Non-vested ending balance (in shares)	1,831	2,166	2,396
Weighted Average Grant Date Fair Value
Weighted Average grant Date Fair Value, Non-vested beginning balance (in dollars per share)	$ 54.13	$ 45.53	$ 43.43
Weighted Average grant Date Fair Value, Granted (in dollars per share)	64.65	59.71	50.66
Weighted Average grant Date Fair Value, Vested (in dollars per share)	51.38	46.74	51.35
Weighted Average grant Date Fair Value, Forfeited (in dollars per share)	57.76	48.24	43.56
Weighted Average grant Date Fair Value, Non-vested ending balance (in dollars per share)	$ 62.58	$ 54.13	$ 45.53

Stock Plans - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 77,855	$ 74,129	$ 73,928
Restructuring charges incurred	14,765	0	0
Stock-Based Compensation
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restructuring charges incurred	2,632
Cost of services revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,922	3,182	3,925
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	34,874	36,917	34,005
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	8,601	8,411	7,335
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 31,458	$ 25,619	$ 28,663

Stock Plans - Performance-based and Market-based Awards (Detail) shares in Thousands	12 Months Ended
	Mar. 31, 2019 tranche $ / shares shares
PSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)	72
Number of annual tranches \| tranche	3
Maximum potential for awards to vest	200.00%
Maximum number of awards to vest (in shares)	144
Percentage of shares eligible to vest	94.00%
Market performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)	75
Number of annual tranches \| tranche	3
Maximum potential for awards to vest	200.00%
Maximum number of awards to vest (in shares)	150
Stock options granted, vesting period	3 years
Weighted average grant date fair value, granted (in dollars per share) \| $ / shares	$ 81.78

Stock Plans - Employee Stock Purchase Plan (Detail) - USD ($) shares in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 77,855,000	$ 74,129,000	$ 73,928,000
Unrecognized stock-based compensation expense	$ 81,833,000
Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price as a percentage of fair market value	85.00%
Length of offering period (in months)	6 months
Maximum employee payroll percent deduction of salary	10.00%
Maximum amount of stock purchasable by employees within a calendar year	$ 25,000
Number of shares purchased by employees (in shares)	211	234
Proceeds received	$ 10,407,000	$ 10,282,000
Compensation expense	3,080,000	$ 2,848,000	$ 2,620,000
Unrecognized stock-based compensation expense	$ 1,161,000

Stock Plans Stock Plans - Impact on Stock Compensation Expense for Changes in Senior Leadership (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 77,855	$ 74,129	$ 73,928
Vesting on two-year anniversary of grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares eligible to vest	66.67%
Vesting on three-year anniversary of grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares eligible to vest	33.33%
Stock options \| Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Compensation expense		$ 12,157
Stock options \| Other senior leadership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 1,208
Market performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)		75
Stock options granted, vesting period		3 years
Maximum potential for awards to vest		200.00%
Maximum number of awards to vest (in shares)		150
Weighted average grant date fair value, granted (in dollars per share)		$ 81.78
Market performance shares \| Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)	46
Stock options granted, vesting period	3 years
Maximum potential for awards to vest	200.00%
Maximum number of awards to vest (in shares)	92
Weighted average grant date fair value, granted (in dollars per share)	$ 91.66
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)		1,256	1,235	1,333
Weighted average grant date fair value, granted (in dollars per share)		$ 64.65	$ 59.71	$ 50.66
Restricted stock units \| Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards, granted (in shares)	108
Market performance shares and RSUs \| Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 729

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Tax Credit Carryforward [Line Items]
Deferred tax assets	$ 0
Federal NOL carry forwards	20,166,000
Deferred tax asset, state NOLs	1,319,000
Unrecognized Tax Benefits
Remaining unrecognized tax benefits	0
State and local
Tax Credit Carryforward [Line Items]
Research tax credit	2,187,000
Unrecognized Tax Benefits
Interest and penalties	40,000	$ 80,000	$ 61,000
Federal
Tax Credit Carryforward [Line Items]
Research tax credit	$ 17,508,000

Income Taxes - Components of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Domestic	$ (1,762)	$ (18,159)	$ (7,860)
Foreign	12,189	14,659	5,866
Income (loss) before income taxes	$ 10,427	$ (3,500)	$ (1,994)

Income Taxes - Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Current:
Federal	$ (1,772)	$ (1,036)	$ 6,360
State	103	(383)	(958)
Foreign	8,371	7,307	4,818
Deferred:
Federal	144	57,582	(11,520)
State	0	(4,601)	(80)
Foreign	20	(469)	(106)
Income tax expense (benefit)	$ 6,866	$ 58,400	$ (1,486)

Income Taxes - Reconciliation of Statutory Tax Rates and Effective Tax Rates (Detail)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory federal income tax expense (benefit) rate	(21.00%)	(31.60%)	(35.00%)
State and local income tax expense, net of federal income tax effect	(1.00%)	20.50%	2.90%
Foreign earnings taxed at different rates	(25.50%)	63.00%	131.50%
U.S. tax on Global Intangible Low-Taxed Income	(72.90%)	(0.00%)	(0.00%)
Domestic permanent differences	(7.80%)	65.60%	96.60%
Foreign tax credits	22.40%	(39.20%)	(67.70%)
Research credits	51.80%	(83.20%)	(163.20%)
Tax reserves	5.20%	(7.00%)	4.10%
Valuation allowance	76.70%	1626.50%	(31.80%)
Statutory tax rate changes	7.80%	451.90%	15.90%
Stock-based compensation	(97.20%)	(377.60%)	(0.00%)
Other differences, net	(4.30%)	(20.30%)	(27.80%)
Effective income tax expense (benefit)	(65.80%)	1668.60%	(74.50%)

Income Taxes - Components of Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Deferred tax assets:
Net operating losses	$ 6,223	$ 9,015
Equity investment	1,298	1,162
Stock-based compensation	13,926	31,077
Deferred revenue	15,144	12,670
Tax credits	23,632	15,240
Accrued expenses	2,138	1,400
Allowance for doubtful accounts and other reserves	661	543
Less: valuation allowance	(50,160)	(58,350)
Total deferred tax assets	12,862	12,757
Deferred tax liabilities:
Depreciation and amortization	(6,673)	(6,172)
Deferred commissions and other	(8,783)	(10,790)
Total deferred tax liabilities	(15,456)	(16,962)
Net deferred tax liability	$ (2,594)	$ (2,430)

Income Taxes - Reconciliation of Amounts of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 1,740	$ 2,098	$ 1,952
Additions for tax positions related to current fiscal period	0	0	0
Additions for tax positions related to prior years	547	150	179
Settlements and effective settlements with tax authorities and remeasurements	0	0	0
Reductions related to the expiration of statutes of limitations	(695)	(397)	0
Foreign currency translation adjustment	0	(111)	(33)
Ending balance	$ 1,592	$ 1,740	$ 2,098

Employee Benefit Plan - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Retirement Benefits [Abstract]
Company contributions to defined contribution plan	$ 2,786	$ 2,959	$ 2,998

Segment Information - Additional Information (Detail)	12 Months Ended
Segment Information - Additional Information (Detail)	Mar. 31, 2019 segment
Segment Reporting [Abstract]
Number of reportable segments	1

Segment Information - Schedule of Revenue by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 181,427	$ 184,275	$ 169,078	$ 176,177	$ 184,915	$ 180,366	$ 168,140	$ 165,972	$ 710,957	$ 699,393	$ 645,005
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues									379,221	377,934	365,354
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues									$ 331,736	$ 321,459	$ 279,651

Segment Information - Schedule of Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 167,451	$ 171,854
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	143,591	145,918
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 23,860	$ 25,936

Restructuring - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred	$ 14,765	$ 0	$ 0
Stock-Based Compensation
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred	$ 2,632

Restructuring - Restructuring Accruals (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Balance at March 31, 2018	$ 0
Restructuring charges	15,640
Payments	(13,182)
Accrual reversals	(875)
Balance at March 31, 2019	1,583
Lease abandonment charges
Restructuring Cost and Reserve [Line Items]
Balance at March 31, 2018	0
Restructuring charges	1,034
Payments	(540)
Accrual reversals	0
Balance at March 31, 2019	494
Severance & payroll related charges
Restructuring Cost and Reserve [Line Items]
Balance at March 31, 2018	0
Restructuring charges	14,606
Payments	(12,642)
Accrual reversals	(875)
Balance at March 31, 2019	$ 1,089

Selected Quarterly Financial Data (unaudited) (Detail) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2019

Mar. 31, 2018

Mar. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Total revenue

$ 181,427

$ 184,275

$ 169,078

$ 176,177

$ 184,915

$ 180,366

$ 168,140

$ 165,972

$ 710,957

$ 699,393

$ 645,005

Gross margin

147,753

155,422

142,205

148,571

156,648

155,409

144,873

144,311

593,951

601,241

559,813

Net income (loss)

$ (2,163)

$ 13,400

$ 891

$ (8,567)

$ (1,661)

$ (58,945)

$ (1,010)

$ (284)

$ 3,561

$ (61,900)

$ (508)

Net income (loss) per common share:

Basic (in dollars per share)

$ (0.05)

^[1]

$ 0.29

^[1]

$ 0.02

^[1]

$ (0.19)

^[1]

$ (0.04)

^[1]

$ (1.30)

^[1]

$ (0.02)

^[1]

$ (0.01)

^[1]

$ 0.08

$ (1.37)

$ (0.01)

Diluted (in dollars per share)

$ (0.05)

^[1]

$ 0.28

^[1]

$ 0.02

^[1]

$ (0.19)

^[1]

$ (0.04)

^[1]

$ (1.30)

^[1]

$ (0.02)

^[1]

$ (0.01)

^[1]

$ 0.07

$ (1.37)

$ (0.01)

[1]	Per common share amounts for the quarters and full year have been calculated separately. Accordingly, quarterly amounts do not add to the annual amount because of differences in the weighted average common shares outstanding during each period used in the basic and diluted calculations.

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 104	$ 103	$ 315
Charged (Credited) to Costs and Expenses	569	25	(161)
Deductions	184	24	51
Balance at End of Year	489	104	103
Valuation allowance for deferred taxes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	58,350	1,796	2,772
Charged (Credited) to Costs and Expenses	(8,190)	56,554	(976)
Deductions	0	0	0
Balance at End of Year	$ 50,160	$ 58,350	$ 1,796

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 164,000
Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	435,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (271,000)