Accounting Policies [Abstract] Deferred Revenue Deferred Revenue, by Arrangement, Disclosure [Table Text Block] Financial Assets Measured at Fair Value Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments Held-to-maturity Securities, Fair Value Debt Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR Rate London Interbank Offered Rate (LIBOR) [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt term Debt Instrument, Term Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Variable rate Debt Instrument, Basis Spread on Variable Rate Unused capacity fee (as a percentage) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Unamortized debt issuance costs Unamortized Debt Issuance Expense Amortization of debt issuance costs Amortization of Financing Costs Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid – In Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance (in shares) Shares, Outstanding Beginning Balance Stockholders' Equity Attributable to Parent Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Tax benefits relating to stock-based payments Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Share issuances related to stock-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share issuances related to stock-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Net loss Net Income (Loss) Attributable to Parent Other comprehensive income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Ending Balance (in shares) Ending Balance Statement of Financial Position [Abstract] Allowance for doubtful trade accounts receivable Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value (in Dollars per Share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in Shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in Shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in Shares) Preferred Stock, Shares Outstanding Common stock, par value (in Dollars per Share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in Shares) Common Stock, Shares Authorized Common stock, shares issued (in Shares) Common Stock, Shares, Issued Common stock, shares outstanding (in Shares) Common Stock, Shares, Outstanding Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Buildings Building [Member] Computers, servers and other equipment Computer Equipment [Member] Furniture and fixtures Furniture and Fixtures [Member] Leasehold improvements Leasehold Improvements [Member] Purchased software Computer Software, Intangible Asset [Member] Construction in process Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less: Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net Earnings Per Share [Abstract] Computation of Basic and Diluted Net Income Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Depreciation Depreciation Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Stock Option Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Restricted Stock Unit Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Document And Entity Information [Abstract] Document and Entity Information Abstract. Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Held-to-maturity Securities, Current Trade accounts receivable, less allowance for doubtful accounts of $135 at June 30, 2015 and $104 at March 31, 2015 Accounts Receivable, Net, Current Prepaid expenses and other current assets Other Assets, Current Deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance, Current Total current assets Assets, Current Deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Property and equipment, net Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued Liabilities, Current Deferred revenue Deferred Revenue, Current Total current liabilities Liabilities, Current Deferred revenue, less current portion Deferred Revenue, Noncurrent Other liabilities Other Liabilities, Noncurrent Commitments and contingencies (Note 5) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value: 50,000 shares authorized, no shares issued and outstanding at June 30, 2015 and March 31, 2015 Preferred Stock, Value, Issued Common stock, $0.01 par value: 250,000 shares authorized, 45,392 shares and 45,122 shares issued and outstanding at June 30, 2015 and March 31, 2015, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Income Tax Disclosure [Abstract] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance as of March 31, 2015 Unrecognized Tax Benefits Additions for tax positions related to fiscal 2016 Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Additions for tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Settlements and effective settlements with tax authorities and remeasurements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Reductions related to the expiration of statutes of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Foreign currency translation adjustment Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation Balance as of June 30, 2015 Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Net Income per Common Share Earnings Per Share [Text Block] Income Statement [Abstract] Revenues: Sales Revenue, Services, Net [Abstract] Software Licenses Revenue Services Services Revenue Services Revenue derived from customer support revenue and other professional services. Customer support includes software updates on a when-and-if-available basis, telephone support and bug fixes or patches. Other Professional Services include consulting, assessment design services and installation services and training. Total revenues Revenues Cost of revenues: Cost of Services [Abstract] Software License Costs Services Cost Of Service Revenue Cost of generating revenue derived from customer support revenue and other professional services. Customer support includes software updates on a when and if available basis, telephone support and bug fixes or patches. Other Professional Services include consulting, assessment design services and installation services and training. Total cost of revenues Cost of Revenue Gross margin Gross Profit Operating expenses: Operating Expenses [Abstract] Sales and marketing Selling and Marketing Expense Research and development Research and Development Expense General and administrative General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Operating Expenses Income (loss) from operations Operating Income (Loss) Interest expense Interest Expense Interest income Investment Income, Interest Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income (loss) Net income (loss) per common share: Basic (in Dollars per share) Earnings Per Share, Basic Diluted (in Dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Property and Equipment Property, Plant and Equipment [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Revolving Credit Facility Debt Disclosure [Text Block] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement Type Deferred Revenue Arrangement Type [Axis] Deferred Revenue [Domain] Deferred Revenue [Domain] Deferred software revenue Software License Arrangement [Member] Deferred services revenue Deferred Services Revenue [Member] Deferred Services Revenue. Deferred Revenue Arrangement [Line Items] Deferred Revenue Arrangement [Line Items] Deferred revenue, Current Deferred revenue, Non-current Total Deferred Revenue Deferred Revenue Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Common Stock Repurchased Common Stock Repurchase Program [Member] Common Stock Repurchase Program [Member] Class of Stock [Line Items] Class of Stock [Line Items] Remaining value of common stock to be repurchased under share repurchase program Stock Repurchase Program, Remaining Authorized Repurchase Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock Options and Restricted Stock Units Stock Options and Restricted Stock Units [Member] Stock Options and Restricted Stock Units [Member] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Performance Stock Options Performance Stock Options [Member] Performance Stock Options [Member] Performance Restricted Stock Units Performance Restricted Stock Units [Member] Performance Restricted Stock Units [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Unrecognized stock-based compensation expense, net of estimated forfeitures Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average period awards expected to be recognized over Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted average fair value of stock options granted per share (in Dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Weighted average fair value, units awarded (in Dollars per unit) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Awarded (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Service period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Stock-based compensation expense Share-based Compensation Stock Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of services revenue Cost Of Services Revenue [Member] Cost of services revenue Member. Sales and marketing Selling and Marketing Expense [Member] Research and development Research and Development Expense [Member] General and administrative General and Administrative Expense [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Capitalization Capitalization [Text Block] Entities disclosure for capitalization. Number of Awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested (Shares) as of March 31, 2014 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Vested (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Non-vested (Shares) as of June 30, 2015 Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Non-vested (in Dollars per Share) as of March 31, 2014 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Awarded (in Dollars per Share) Vested (in Dollars per Share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in Dollars per Share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Non-vested (in Dollars per Share) as of June 30, 2015 Antidilutive securities excluded from computation Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Taxes Income Tax Disclosure [Text Block] Reconciliation of Amounts of Unrecognized Tax Benefits Summary of Income Tax Contingencies [Table Text Block] Purchase Plan Employee Stock [Member] Stock purchase price (percentage) Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Offering period Share-based Compensation Arrangement by Share-based Payment Award, Offering Period Share-based Compensation Arrangement by Share-based Payment Award, Offering Period Maximum employee subscription rate Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Maximum annual purchases per employee Share-based Compensation Arrangement by Share-based Payment Award, Maximum Annual Purchases Per Employee, Amount Share-based Compensation Arrangement by Share-based Payment Award, Maximum Annual Purchases Per Employee, Amount Shares reserved for future issuance Common Stock, Capital Shares Reserved for Future Issuance Compensation expense Allocated Share-based Compensation Expense Net income (loss) Basic net income (loss) per common share: Earnings Per Share, Basic [Abstract] Basic weighted average shares outstanding (in shares) Basic net income (loss) per common share (in Dollars per share) Diluted net income (loss) per common share: Earnings Per Share, Diluted [Abstract] Dilutive effect of stock options, restricted stock units, performance stock options, performance restricted stock units and employee stock purchase plan Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average shares outstanding (in shares) Diluted net income (loss) per common share (in Dollars per share) Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Noncash stock-based compensation Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Deferred income taxes Deferred Income Tax Expense (Benefit) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Trade accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities Increase (Decrease) in Accrued Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of short-term investments Payments to Acquire Short-term Investments Proceeds from maturity of short-term investments Proceeds from Sale of Short-term Investments Purchases for corporate campus headquarters Payments to Acquire Other Productive Assets Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Repurchase of common stock Payments for Repurchase of Common Stock Debt issuance costs Payments of Debt Issuance Costs Proceeds from the exercise of stock options and the Employee Stock Purchase Plan Proceeds from Stock Options Exercised Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effects of exchange rate — changes in cash Effect of Exchange Rate on Cash and Cash Equivalents Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Purchases for corporate campus headquarters in accounts payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Effective income tax rate (percentage) Effective Income Tax Rate Reconciliation, Percent Reconciliation Of Unrecognized Tax Benefits [Table] Reconciliation Of Unrecognized Tax Benefits [Table] Reconciliation of Unrecognized Tax Benefits [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Liabilities Other Liabilities [Member] Deferred Tax Assets Deferred Tax Assets [Member] Deferred Tax Assets [Member] Reconciliation Of Unrecognized Tax Benefits [Line Items] Reconciliation Of Unrecognized Tax Benefits [Line Items] Reconciliation of Unrecognized Tax Benefits [Line Items] Unrecognized tax benefits Unrecognized tax benefits accrued interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Legal Entity Legal Entity [Axis] Entity [Domain] Entity [Domain] Arrow Arrow [Member] Arrow [Member] Hitachi Hitachi [Member] Hitachi Data Systems Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenue Sales Revenue, Net [Member] Accounts Receivable Accounts Receivable [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Sources of primary revenue Sources Of Primary Revenue The number of sources of revenue in a typical sales agreement. Length of customer support agreement - in years Customer Support Agreement The typical length of Customer Support Agreements. Number of days for other professional services Timeframe Other Professional Services Are Performed After Entering Into Agreement Timeframe other professional services are generally performed after entering into an agreement. Percentage of sales in respect to total revenue through companies reseller agreement Percentage Of Sales In Respect Of Total Revenue Through Companies Reseller Agreement Percentage of sales in respect of total revenue through companies reseller. Percentage of accounts receivable Concentration Risk, Percentage Percentage of sales in relation to total revenues through Company's reseller and original equipment manufacturer agreement Percentage Of Sales In Respect Of Total Revenue Through Companies Reseller And Oem Agreement Percentage of sales in respect of total revenue through companies reseller and OEM Agreement. Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Deferred Revenue Revenue Recognition, Deferred Revenue [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Black-Scholes Option-Pricing Model Assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Expected volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Weighted average expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Risk-free interest rates, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rates, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Weighted average expected life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Number of Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding (Shares) as of March 31, 2014 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options granted (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Options exercised (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options forfeited (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Options expired (Shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding (Shares) as of June 30, 2015 Vested or expected to vest (Shares) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (Shares) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted- Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding (in Dollars per share) as of March 31, 2014 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options granted (in Dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options exercised (in Dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options forfeited (in Dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options expired (in Dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding (in Dollars per share) as of June 30, 2015 Vested or expected to vest (in Dollars per share) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Exercisable (in Dollars per share) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Share Based Compensation Arrangement By Share Based Payment Award Other Than Options Weighted Average Remaining Contractual Term [Abstract] Share based Compensation Arrangement by Share based Payment Award, Other than Options, Weighted Average Remaining Contractual Term [Abstract] Outstanding (years) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Vested or expected to vest (years) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable (years) as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Outstanding as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Vested or expected to vest as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable as of June 30, 2015 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value