Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Customer Two Customer Two [Member] Customer two. Title of 12(b) Security Title of 12(b) Security Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-Sale [Table] Document Fiscal Year Focus Document Fiscal Year Focus Revenue, remaining performance obligation, amount period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Amortization of acquired intangibles and acquisition-related costs Business Combination, Acquisition-Related Cost, Expense Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Customer [Axis] Customer [Axis] Schedule of Estimated Future Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Common stock, $0.001 par value, 120,000,000 shares authorized, 45,234,573 issued and 45,110,617 outstanding as of June 30, 2026, and 45,636,531 issued and outstanding as of September 30, 2025 Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Payment of tax withholding obligations related to net share settlements of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Accrued payroll and related taxes Employee-related Liabilities, Current Trade names Trademarks [Member] Schedule of Carrying Values Schedule of Long-Term Debt Instruments [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Derivative Instrument [Axis] Derivative Instrument [Axis] Settlement of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Vested, Weighted-Average Exercise Price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Average price of shares repurchased (in dollars per share) Shares Acquired, Average Cost Per Share Bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) ESPP common stock equivalents Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Loss Contingencies [Table] Loss Contingencies [Table] Leases [Abstract] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Foreign Letter Of Credit Foreign Letter Of Credit [Member] Foreign Letter Of Credit Entity Address, State or Province Entity Address, State or Province Options granted (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Foreign currency translation adjustment Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Shares used in calculating net income per share—basic (in shares) Weighted-average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Contract assets, current portion Contract assets, current Contract with Customer, Asset, after Allowance for Credit Loss, Current Amortization of investment premiums & other Accretion (Amortization) of Discounts and Premiums, Investments Long-term investments Long-Term Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Check verification solutions Check Verification [Member] Check Verification Total current liabilities Liabilities, Current 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Customer relationships Customer Relationships [Member] Comprehensive income Components of comprehensive income (loss), net of tax: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Entity Address, City or Town Entity Address, City or Town Schedule of Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Indebtedness amount Line Of Credit Facility Default Trigger Certain Defaults Of Other Company Indebtedness Amount Line Of Credit Facility Default Trigger Certain Defaults Of Other Company Indebtedness Amount Intangible assets, net Total Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Debt issuance costs Debt Issuance Costs, Gross Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Less: current portion of term loan and convertible senior notes Long-Term Debt, Current Maturities Sales Revenue Net Revenue Benchmark [Member] Software license License [Member] United States UNITED STATES Concentration Risk Type [Axis] Concentration Risk Type [Axis] Accretion and amortization on convertible senior notes Investment Income, Amortization of Premium Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Recently Adopted Accounting Pronouncements, Change in Significant Accounting Policy and Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Litigation Case [Axis] Litigation Case [Axis] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Amortization of debt discount and issuance costs Amortization of Debt Issuance Costs Use of Estimates Use of Estimates, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total Outstanding borrowings Long-Term Debt Due in 1 to 5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Supplemental disclosures of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Income taxes payable Increase (Decrease) in Income Taxes Payable Document Period End Date Document Period End Date Changes in assets and liabilities, net of acquisitions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Nature of Operations Nature Of Operations Policy [Policy Text Block] Nature of operations. 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diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Grant Type [Domain] Grant Type [Domain] Grant Type [Domain] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Long-term Assets, Excluding Goodwill and Other Intangibles Long-term Assets, Excluding Goodwill and Intangibles Benchmark [Member] Long-term Assets, Excluding Goodwill and Intangibles Benchmark Underlying Security Market Price Change Underlying Security Market Price Change, Percent Proceeds from lines of credit Proceeds from Lines of Credit Deferred taxes Deferred Income Taxes and Tax Credits Commercial paper, short-term Commercial paper Commercial Paper [Member] 2020 Plan 2020 Incentive Plan [Member] 2020 Incentive Plan Less: amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess 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] Revenue from Contract with Customer [Abstract] Common stock equivalents (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Exercised, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Quoted Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Schedules of Revenue Concentration From the Company’s Largest Customers Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Effective tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Total lease payments Lessee, Operating Lease, Liability, to be Paid Litigation Status [Domain] Litigation Status [Domain] Outstanding at beginning of period (in dollars per share) Outstanding at end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Prior Plans Prior Plans [Member] Prior plans. 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Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Estimated useful lives of intangible assets (in years) Intangible Asset, Finite-Lived, Useful Life Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Schedule of RSU Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Exercise Price Award Exercise Price Settlement of restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Litigation Status [Axis] Litigation Status [Axis] Amount authorized and approved under share repurchase program Share Repurchase Program, Authorized, Amount Unrecognized compensation expense related to outstanding stock options and 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portion Contract assets, non-current Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Less: unamortized discount and issuance costs, net of amortization Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Term loan Secured Debt [Member] Total operating costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Debt interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Counterparty Name [Domain] Counterparty Name [Domain] Total stockholders’ equity Beginning balance Ending balance Total accumulated other comprehensive income (loss) Equity, Attributable to Parent Discount rate from market price, offering date (in percentage) Share Based Compensation Arrangement By Share Based Payment Award, Discount Rate From Market Price Offering Date Other income, net Nonoperating Income (Expense) Number of financial services organizations, leading marketplace and financial technology brands (more than) Number Of Financial Institutions That Signed Agreement To Deploy Mobile Deposit Number of financial institutions that signed agreement to deploy mobile deposit. ASSETS Assets: Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Cost Debt Securities, Available-for-Sale, Amortized Cost Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] ROU liabilities Present value of future lease payments Operating Lease, Liability Insider Trading Policies and Procedures [Line Items] Stock options outstanding (in shares) Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Performance options Performance Options [Member] Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Inducement Grants Inducement Grants [Member] Inducement Grants Performance RSUs Performance Shares [Member] UrbanFT UrbanFT, Inc. [Member] UrbanFT, Inc. Business Combination [Domain] Business Combination [Domain] Schedule Of Entity Wide Revenue By Major Customers By Reporting Segments [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Table] Letter of Credit Letter of Credit [Member] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Repayments of senior convertible notes Payments for Derivative Instrument, Financing Activities Total potentially dilutive common shares outstanding (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of operating segments Number of Operating Segments RSUs Restricted Stock Units (RSUs) [Member] Schedule of Goodwill Goodwill [Table Text Block] Schedule of Potentially Dilutive Common Shares Excluded from Calculation of Net Income per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Entity Central Index Key Entity Central Index Key Additional paid-in capital Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Fraud and identity solutions Fraud And Identity Solutions [Member] Fraud And Identity Solutions Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Proceeds from other borrowings Proceeds From Notes Payable, Net Of Loan Costs Proceeds From Notes Payable, Net Of Loan Costs Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Accounts Receivable Accounts Receivable [Member] Remaining 2026 Long-Term Debt, Maturity, Remainder of Fiscal Year Income Statement [Abstract] Income Statement [Abstract] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Issuance of common stock under employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Document Transition Report Document Transition Report Convertible senior notes Convertible Notes Payable, Current Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Deferred income tax assets Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] SaaS SaaS [Member] SaaS Schedule of Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Customer One Customer One [Member] Customer one. Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Schedule of Interest Costs Recognized Related to 2026 Notes Interest Expense [Table Text Block] Interest Expense City Area Code City Area Code Accumulated Other Comprehensive Income (Loss) Total accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] All Individuals All Individuals [Member] Convertible senior notes Convertible Debt Securities [Member] Schedule of Revenue from External Customers by Geographic Areas Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Name Forgone Recovery, Individual Name Weighted average period for unrecognized compensation expense expected to be recognized (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted-Average Fair Market Value Per Share Weighted-Average Fair Market Value Per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Statement [Line Items] Statement [Line Items] Total assets Assets Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Convertible Debt Convertible Debt [Member] Common stock reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Interest expense Total interest expense recognized Interest Expense, Nonoperating Schedule of Stock-based Compensation Expense Related to Stock Options and RSUs Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Issuance of common stock under employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Proceeds from term loan Proceeds from Convertible Debt Other assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] 2028 Long-Term Debt, Maturity, Year Two Stock-based compensation expense Recognized compensation expense Share-Based Payment Arrangement, Expense Repurchases and retirement of common stock (in shares) Stock Repurchased and Retired During Period, Shares Other non-current liabilities Other Liabilities, Noncurrent Goodwill Beginning balance Ending balance Goodwill Additional value, line of credit facility, maximum borrowing capacity Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Increase in number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Due within 1 year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Revenue recognized included in contract liability balance at the beginning of the period Contract with Customer, Liability, Revenue Recognized Completed technologies Completed Technologies [Member] Completed technologies. Accumulated Deficit Retained Earnings [Member] Lease liabilities, non-current portion Operating Lease, Liability, Noncurrent Income tax payables Taxes Payable, Current Revolving credit line Revolving Credit Facility [Member] Canceled (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 Unrealized gain (loss) on available-for-sale debt securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Fair Value Measurements and Disclosures Fair Value Measurement, Policy [Policy Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Invoice payment period (no more than) Revenue From Contract With Customer, Payment Term Revenue From Contract With Customer, Payment Term Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Unrealized loss on investments, net of tax benefit of $8, $3, $22, and $29 Change in unrealized loss on investments Unrealized holding loss on available-for-sale investments OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Common stock, shares outstanding (in shares) Common stock, beginning balance (in shares) Common stock, ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Repayments of term loan Payments of Debt Issuance Costs Corporate debt securities Corporate Debt Securities [Member] Net income per share—diluted (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Payment of tax withholding obligations related to net share settlements of equity awards Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Accrued payroll and related taxes Increase (Decrease) in Employee Related Liabilities Litigation Case [Domain] Litigation Case [Domain] Amortization of acquired intangible assets Intangible Asset, Finite-Lived, Amortization Expense Research and development Research and Development Expense Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Schedule of Performance RSU Activity Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block] Total revenue Revenue from Largest Customers Revenue from Contract with Customer, Excluding Assessed Tax Property and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Professional services and other Fraud And Identity Solutions, Professional Services And Other [Member] Fraud And Identity Solutions, Professional Services And Other Unused revolving line facility fee (as a percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage SaaS, maintenance, and other Service, Other [Member] Financial Instruments [Domain] Financial Instruments [Domain] Convertible senior notes 2026 Notes Convertible Senior Unsecured Notes Due 2026 [Member] Convertible Senior Unsecured Notes Due 2026 Other Borrowings Other Borrowings [Member] Other Borrowings Goodwill And Intangible Assets [Table] Goodwill And Intangible Assets [Table] Goodwill and intangible assets. 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ICAR Vision Systems, S.L. [Member] ICAR Vision Systems, S.L. 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