Cash, Cash Equivalents and Short-term Investments Disclosure [Abstract] Disclosure - Cash and Cash Equivalents and Short-term Investments [Abstract] Schedule of Available-for-sale Securities [Table] Asset Class Asset Class [Axis] Fair Value by Asset Class [Domain] Fair Value by Asset Class [Domain] Cash and cash equivalents Cash and Cash Equivalents [Member] Short-term investments Short-term Investments [Member] Restricted Cash and Cash Equivalents Restricted Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Cash Cash [Member] Cash equivalents Cash Equivalents [Member] Investment Type Investment Type [Axis] Investment Type Categorization [Domain] Investment Type Categorization [Domain] Money market mutual funds Money Market Funds [Member] Commercial paper Commercial Paper [Member] Asset-backed securities Asset-backed Securities [Member] Certificates of deposit Certificates of Deposit [Member] Municipal securities Municipal Notes [Member] Corporate bonds Corporate Bond Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Estimated Fair Value Available-for-sale Securities, Fair Value Disclosure Commitments and Contingencies Disclosure [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Fiscal 2013 Operating Leases Future Minimum Payments Due In Remainder Of Fiscal Year Operating Leases Future Minimum Payments Due In Remainder Of Fiscal Year Fiscal 2014 Operating Leases, Future Minimum Payments, Due in Two Years Fiscal 2015 Operating Leases, Future Minimum Payments, Due in Three Years Fiscal 2016 Operating Leases, Future Minimum Payments, Due in Four Years Fiscal 2017 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Purchase Obligation, Fiscal Year Maturity [Abstract] Purchase Obligation, Fiscal Year Maturity [Abstract] Fiscal 2013 Purchase Obligation Due In Remainder Of Fiscal Year Purchase Obligation Due In Remainder Of Fiscal Year Fiscal 2014 Purchase Obligation, Due in Second Year Fiscal 2015 Purchase Obligation, Due in Third Year Fiscal 2016 Purchase Obligation, Due in Fourth Year Fiscal 2017 Purchase Obligation, Due in Fifth Year Thereafter Purchase Obligation, Due after Fifth Year Total Purchase Obligation Contractual Obligation, Fiscal Year Maturity [Abstract] Contractual Obligation, Fiscal Year Maturity [Abstract] Fiscal 2013 Contractual Obligation Due In Remainder Of Fiscal Year Contractual Obligation Due In Remainder Of Fiscal Year Fiscal 2014 Contractual Obligation, Due in Second Year Fiscal 2015 Contractual Obligation, Due in Third Year Fiscal 2016 Contractual Obligation, Due in Fourth Year Fiscal 2017 Contractual Obligation, Due in Fifth Year Thereafter Contractual Obligation, Due after Fifth Year Total Contractual Obligation Stock repurchase program [Abstract] Stock repurchase program [Abstract] Stock repurchase program Treasury Stock [Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Statement [Line Items] Statement [Line Items] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Short-term Investments Accounts receivable, net of allowances of $752 and $314 at September 30, 2012 and June 30, 2012, respectively Accounts Receivable, Net, Current Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Deferred income taxes, non-current Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deposits and 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 compensation Employee-related Liabilities, Current Accrued royalties Accrued Royalties, Current Other accrued expenses Other Accrued Liabilities, Current Deferred revenue Deferred Revenue, Current Income taxes payable Accrued Income Taxes, Current Total current liabilities Liabilities, Current Deferred rent, non-current Deferred Rent Credit, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent Commitments and contingencies Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.001 par value: 50,000 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Common stock, $0.001 par value: 600,000 shares authorized; 44,276 shares issued and 41,131 shares outstanding at September 30, 2012; 44,001 shares issued and 41,353 shares outstanding at June 30, 2012 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders' equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Income Tax Disclosure [Abstract] Effective tax rate Effective Income Tax Rate, Continuing Operations Income tax reconciliation - discrete benefit as a result of changes in intercompany arrangements Income Tax Reconciliation, Other Adjustments Effective tax rate reconciliation to Sept 30, 2011 - discrete benefit as a result of changes in intercompany arrangements Effective Tax Rate, Reconciliation To Prior Period, Other Adjustments Effective Tax Rate, Reconciliation To Prior Period, Other Adjustments Unrecognized tax benefit Unrecognized Tax Benefits Unrecognized tax benefits that would affect effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Interest and penalties related to unrecognized tax positions accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Earnings Per Share [Abstract] Net income per share Earnings Per Share [Text Block] Schedule of Cash, Cash Equivalents and Short-term Investments Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income 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, Nonproduction Accretion of premium on short-term investments Accretion (Amortization) of Discounts and Premiums, Investments Stock-based compensation expense Share-based Compensation Write-off of capitalized software Asset Impairment Charges Excess tax benefit from employee stock option plans Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Deferred income taxes Increase (Decrease) in Deferred Income Taxes 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 compensation Increase (Decrease) in Employee Related Liabilities Accrued royalties Increase (Decrease) in Royalties Payable Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Income taxes payable Increase (Decrease) in Income Taxes Payable Deferred rent Increase Decrease In Deferred Rent The net change during the reporting period in deferred rent. Deferred revenue Increase (Decrease) in Deferred Revenue Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Additions to capitalized software Payments to Develop Software Purchases of short-term investments Payments to Acquire Short-term Investments Purchases of long-term investments Payments to Acquire Long-term Investments Proceeds from sales and maturities of short-term investments Proceeds from Sale, Maturity and Collection of Short-term Investments Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Repurchases of common stock Payments for Repurchase of Common Stock Excess tax benefit from employee stock option plans Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net increase 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 disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Income taxes paid Income Taxes Paid Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] 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] Net income applicable to common stockholders: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Basic: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average common shares used in computing basic net income per share Weighted Average Number of Shares Outstanding, Basic Diluted: Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract] Stock options Incremental Common Shares Attributable to Share-based Payment Arrangements Weighted average common shares used in computing diluted net income per share Weighted Average Number of Shares Outstanding, Diluted Net income per share: Earnings Per Share, Basic and Diluted [Abstract] Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Options to purchase common stock Stock Options [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Disclosure of Compensation Related Costs, Share-based Payments [Abstract] 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 Award Type [Axis] Award Type [Domain] Award Type [Domain] Stock options Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Cash, cash equivalents and short-term investments Cash, Cash Equivalents, and Short-term Investments [Text Block] Fair value of financial instruments Fair Value Disclosures [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 [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Cost of revenue Cost of Sales [Member] Research and development Research and Development Expense [Member] Selling and marketing Selling and Marketing Expense [Member] General and administrative General and Administrative Expense [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense Subsequent Events [Abstract] Subsequent events Subsequent Events [Text Block] Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Stock-Based Compensation Expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Assumptions Used to Estimate Weighted Average Fair Value of Options Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Use of estimates Use of Estimates, Policy [Policy Text Block] Concentrations of risk and significant customers Concentration Risk, Credit Risk, Policy [Policy Text Block] Recent accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus 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 Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Summary of business and significant accounting policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Concentration Risk [Table] Concentration Risk [Table] Major Customers Major Customers [Axis] Name of Major Customer [Domain] Name of Major Customer [Domain] Sprint Nextel Corporation Sprint Nextel Corporation [Member] Sprint Nextel Corporation [Member] AT&T Mobility LLC Att Mobility Limited Liability Company [Member] AT&T Mobility LLC [Member] Ford Motor Company Ford Motor Company [Member] Ford Motor Company [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Accounts Receivable Accounts Receivable [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration risk, percentage of revenue Entity-Wide Revenue, Major Customer, Percentage Concentration risk, percentage of receivable Concentration Risk, Percentage Deferred rent Deferred Rent Credit, Current Future Minimum Operating Lease Payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Stockholders Equity Note [Table] Class of Treasury Stock [Table] Equity Components Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional paid-in capital Additional Paid-in Capital [Member] Retained earnings Retained Earnings [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Second program Program Two [Member] Program Two [Member] Stockholders Equity Note [Line Items] Equity, Class of Treasury Stock [Line Items] Authorized amount for stock repurchases Stock Repurchase Program, Authorized Amount Payments for repurchase of common stock Number of treasury shares acquired Treasury Stock, Shares, Acquired Final price paid per share Accelerated Share Repurchases, Final Price Paid Per Share Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Repurchase shares of common stock Treasury Stock, Value, Acquired, Par Value Method Total Estimate of Fair Value, Fair Value Disclosure [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Estimated Fair Value Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2002 Executive Stock Option Plan and 2009 Equity Incentive Plan Executive Stock Option Plan 2002 And Equity Incentive Plan 2009 [Member] 2002 Executive Stock Option Plan and 2009 Equity Incentive Plan Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Range Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Percentage of grant date fair market value at which nonqualified stock options may be granted Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Options granted that vest monthly, vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Options granted, expiration period Share Based Compensation Arrangement By Share Based Payment Award Options Expiration Term Share Based Compensation Arrangement by Share Based Payment Award, Options, Expiration Term Vested during the period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Outstanding, weighted average remaining contractual life Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Aggregate Intrinsic Value Vested and expected to vest Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested and Expected to Vest, Outstanding, Number Vested and expected to vest, weighted average remaining contractual life Sharebased Compensation Arrangements By Sharebased Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term Share-based Compensation Arrangements by Share-based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Number of shares available for and reserved for issuance annual increment amount Annual Increase In Aggregate Number Of Shares Reserved For Future Issuance Annual Increase in Aggregate Number of Shares Reserved for Future Issuance Shares available for grant under our stock option and equity incentive plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Statement of Other Comprehensive Income [Abstract] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Foreign currency translation adjustment, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Unrealized gain (loss) on available-for-sale securities, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Stock-based compensation Stockholders' Equity Note Disclosure [Text Block] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent event Subsequent Event [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] ThinkNear Local Merchant Services, Inc. [Member] Local Merchant Services, Inc. [Member] Financing [Axis] Financing [Axis] Financing [Domain] Financing [Domain] Repurchase of equity Repurchase of Equity [Member] Share repurchase program authorized Oct 23, 2012 Program Three [Member] Program Three [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Consideration transferred Business Combination, Consideration Transferred Cash consideration transferred Business Acquisition, Cost of Acquired Entity, Cash Paid Basic and Diluted Net Income Per Share Applicable to Common Stockholders Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Outstanding Shares Excluded from Computation of Diluted Net Income Per Common Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Available-for-sale Securities [Table] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value, Disclosure Item Amounts [Domain] Amortized Cost Carrying (Reported) Amount, Fair Value Disclosure [Member] Estimated Fair Value Due within one year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due within two years Available For Sale Securities Debt Maturities Within Two Years Amortized Cost Available For Sale Securities Debt Maturities Within Two Years Amortized Cost Due after two years Available For Sale Securities Debt Maturities After Two Years Amortized Cost Available For Sale Securities Debt Maturities After Two Years Amortized Cost Total Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Due within one year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due within two years Available For Sale Securities Debt Maturities Within Two Years Fair Value Available for Sale Securities Debt Maturities Within Two Years Fair Value Due after two years Available For Sale Securities Debt Maturities After Two Years Fair Value Available for Sale Securities Debt Maturities After Two Years Fair Value Total Available For Sale Securities Debt Maturities Fair Value Total Available For Sale Securities Debt Maturities Fair Value Total Income taxes Income Tax Disclosure [Text Block] Guarantees and Indemnifications Disclosure [Abstract] Guarantees and Indemnifications Disclosure [Abstract] Guarantees and indemnifications Guarantees And Indemnifications [Text Block] Guarantees and Indemnifications [Text Block] Income Statement [Abstract] Product Sales Revenue, Goods, Net Services Sales Revenue, Services, Net Total revenue Revenue, Net Product Cost of Goods Sold Services Cost of Services Total cost of revenue Cost of Revenue Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Total operating expenses Operating Expenses Income from operations Operating Income (Loss) Other income, net Other Nonoperating Income (Expense) Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net income per share: Weighted average shares used in computing net income per share: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic Diluted Fair Value of Financial Instruments Using Inputs Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] Accounts receivable, allowances Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options outstanding as of June 30, 2012 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Options outstanding as of September 30, 2012 Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options exercisable 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, Additional Disclosures [Abstract] Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted Average Remaining Contractual Life Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Options exercisable 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] Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value