Entity Central Index Key Lessee operating lease liability payments due year six and after year six. Cover [Abstract] 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 Current Reporting Status Entity Current Reporting Status Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Shell Company Entity Shell Company Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, Address Line Two Entity Address Address Line2 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Title of 12(b) Security Security12b Title Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation State Country Code Entity Interactive Data Current Entity Interactive Data Current Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable Accounts Receivable Net Current Prepaid expenses Prepaid Expense Current Other current assets Other Assets Current Short term investments Held To Maturity Securities Current TOTAL CURRENT ASSETS Assets Current Property and equipment, net Property Plant And Equipment Net Intangible assets, net Finite Lived Intangible Assets Net Long term investments Held To Maturity Securities Noncurrent Right-of-use assets Operating Lease Right Of Use Asset Other assets Other Assets Noncurrent TOTAL ASSETS Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] CURRENT LIABILITIES Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Accrued payroll and benefits Employee Related Liabilities Current Lease liabilities Operating Lease Liability Current Deferred rent Deferred Rent Credit Current Deferred revenue Contract With Customer Liability Current Other current liabilities Other Liabilities Current TOTAL CURRENT LIABILITIES Liabilities Current LONG-TERM LIABILITIES Liabilities Noncurrent [Abstract] Lease liabilities, net of current portion Operating Lease Liability Noncurrent Deferred rent, net of current portion Deferred Rent Credit Noncurrent Deferred revenue, net of current portion Contract With Customer Liability Noncurrent TOTAL LONG-TERM LIABILITIES Liabilities Noncurrent Commitments and contingencies (Note 7) Commitments And Contingencies STOCKHOLDERS’ EQUITY Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] Arrowhead Pharmaceuticals, Inc. stockholders' equity: Stockholders Equity [Abstract] Common stock, $0.001 par value; 145,000,000 shares authorized; 101,111,797 and 95,506,271 shares issued and outstanding as of December 31, 2019 and September 30, 2019, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated deficit Retained Earnings Accumulated Deficit Total Arrowhead Pharmaceuticals, Inc. stockholders' equity Stockholders Equity Noncontrolling interest Minority Interest TOTAL STOCKHOLDERS’ EQUITY Stockholders Equity Including Portion Attributable To Noncontrolling Interest TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities And Stockholders Equity 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 Income Statement [Abstract] REVENUE Revenue From Contract With Customer Excluding Assessed Tax Type of Revenue [Extensible List] Type Of Revenue Extensible List OPERATING EXPENSES Operating Expenses [Abstract] Research and development Research And Development Expense Excluding Acquired In Process Cost General and administrative expenses General And Administrative Expense TOTAL OPERATING EXPENSES Operating Expenses OPERATING INCOME (LOSS) Operating Income Loss OTHER INCOME (EXPENSE) Nonoperating Income Expense [Abstract] Interest income (expense), net Interest Income Expense Nonoperating Net TOTAL OTHER INCOME (EXPENSE) Nonoperating Income Expense INCOME (LOSS) BEFORE INCOME TAXES Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Provision for income taxes Income Tax Expense Benefit NET INCOME (LOSS) Net Income Loss NET INCOME (LOSS) PER SHARE - BASIC Earnings Per Share Basic NET INCOME (LOSS) PER SHARE - DILUTED Earnings Per Share Diluted Weighted average shares outstanding - basic Weighted Average Number Of Shares Outstanding Basic Weighted average shares outstanding - diluted Weighted Average Number Of Diluted Shares Outstanding OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: Comprehensive Income Net Of Tax [Abstract] Foreign currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax COMPREHENSIVE INCOME (LOSS) Comprehensive Income Net Of Tax Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Common Stock Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid In Capital [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income [Member] Accumulated Deficit Retained Earnings [Member] Non-controlling Interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Beginning Balance, Amount Beginning Balance, Shares Shares Outstanding Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Exercise of stock options, Amount Stock Issued During Period Value Stock Options Exercised Exercise of stock options, Shares Stock Issued During Period Shares Stock Options Exercised Common stock - restricted stock units vesting, Amount Stock Issued During Period Value Restricted Stock Award Gross Common stock - restricted stock units vesting, Shares Stock Issued During Period Shares Restricted Stock Award Gross Common stock - issued for cash, Amount Stock Issued During Period Value New Issues Common stock - issued for cash, Shares Stock Issued During Period Shares New Issues Foreign currency translation adjustments Net income (loss) Profit Loss Ending Balance, Amount Ending Balance, Shares Statement Of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided By Used In Operating Activities [Abstract] Net income (loss) Stock-based compensation Share Based Compensation Depreciation and amortization Depreciation And Amortization Amortization/(accretion) of note premiums Investment Income Net Amortization Of Discount And Premium Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Deferred revenue Increase Decrease In Contract With Customer Liability Accounts payable Increase Decrease In Accounts Payable Accrued expenses Increase Decrease In Accrued Liabilities Other Increase Decrease In Other Operating Liabilities NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES Net Cash Provided By Used In Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided By Used In Investing Activities [Abstract] Purchases of property and equipment Payments To Acquire Property Plant And Equipment Purchases of marketable securities Payments To Acquire Marketable Securities Proceeds from sale of marketable securities Proceeds From Sale And Maturity Of Marketable Securities NET CASH PROVIDED BY (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] Principal payments on notes payable Repayments Of Notes Payable Proceeds from the exercises of stock options Proceeds From Stock Options Exercised Proceeds from the issuance of common stock Proceeds From Issuance Of Common Stock NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES Net Cash Provided By Used In Financing Activities NET INCREASE (DECREASE) IN CASH Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CASH AND CASH EQUIVALENTS AT END OF PERIOD Supplementary disclosures: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Net Accounting Policies [Abstract] Organization and Significant Accounting Policies Organization Consolidation And Presentation Of Financial Statements Disclosure And Significant Accounting Policies [Text Block] Collaboration and license agreements. Collaboration And License Agreements [Abstract] Collaboration and License Agreements Collaborative Arrangement Disclosure [Text Block] Property Plant And Equipment [Abstract] Property and Equipment Property Plant And Equipment Disclosure [Text Block] Held To Maturity Securities Classified [Abstract] Investments Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Intangible Assets Intangible Assets Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Leases [Abstract] Leases Lessee Operating Leases [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Leases Lessee Leases Policy [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Summary of Property and Equipment Property Plant And Equipment [Text Block] Summary of Short-term and Long-term Investments Held To Maturity Securities [Text Block] Schedule of Intangible Assets Schedule Of Intangible Assets And Goodwill Table [Text Block] Summary of Maturities of Operating Lease Liabilities on an Undiscounted Basis Lessee Operating Lease Liability Maturity Table [Text Block] Future Minimum Lease Payments Under Operating Leases Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Summarized Information about Stock Options Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Assumptions Used to Value Stock Options Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Summary of Share Activity Related to RSUs Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Fair Value Measurements for Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Cash received as due under agreement. Milestone payment earned. Development regulatory and sales milestones payments. Number of additional targets for development and sales milestone payments. Milestone payment received. Organization and significant accounting policies. Organization and significant accounting policies. Organization And Significant Accounting Policies [Table] Organization And Significant Accounting Policies [Table] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Maximum Maximum [Member] Minimum [Member] Minimum [Member] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Janssen Pharmaceuticals, Incorporation. Janssen Janssen Pharmaceuticals Incorporation [Member] Janssen Pharmaceuticals and Johnson And Johnson Innovation JJDC Incorporation. Janssen and JJDC Janssen Pharmaceuticals And Johnson And Johnson Innovation J J D C Incorporation [Member] Johnson and Johnson Innovation-JJDC, Incorporation. JJDC Johnson And Johnson Innovation J J D C Incorporation [Member] Amgen Incorporated. Amgen Amgen Incorporated [Member] Collaborative Arrangement and Arrangement Other than Collaborative Type Of Arrangement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Arrangements And Nonarrangement Transactions [Member] JNJ-3989 (ARO-HBV) Agreement. JNJ-3989 (ARO-HBV) Agreement J N J3989 A R O H B V Agreement [Member] Collaboration and license agreements. Collaboration and License agreements Collaboration And License Agreement [Member] License agreement. License Agreement License Agreement [Member] Collaboration agreement. Collaboration Agreement Collaboration Agreement [Member] License collaboration and stock purchase agreement. License Collaboration and Stock Purchase Agreement License Collaboration And Stock Purchase Agreement [Member] AMG 890 (ARO-LPA) Agreement. AMG-890 (ARO-LPA) Agreement A M G890 A R O L P A Agreement [Member] Sale of Stock Subsidiary Sale Of Stock [Axis] Sale of Stock Sale Of Stock Name Of Transaction [Domain] Common stock purchase agreement. Common Stock Purchase Agreement Common Stock Purchase Agreement [Member] Organization And Significant Accounting Policies [Line Items] Organization And Significant Accounting Policies [Line Items] Milestone payment Milestone Payment Earned Cash received as due under agreement Cash Received As Due Under Agreement Development regulatory and sales milestones payments Development Regulatory And Sales Milestones Payments Number of additional targets for development and sales milestone payments Number Of Additional Targets For Development And Sales Milestone Payments Milestone payment Milestone Payment Received Increase decrease in cash and investments. Restricted Cash Restricted Cash And Cash Equivalents At Carrying Value Net increase (decrease) in cash and investments Increase Decrease In Cash And Investments Right-of-use liabilities Operating Lease Liability Agreement date. Number of agreements. Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] AMG 890 (ARO-LPA) and ARO-AMG1 agreement. AMG 890 (ARO-LPA) and ARO-AMG1 Agreement A M G890 A R O L P A And A R O A M G1 Agreement [Member] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Agreement date Agreement Date Number of agreements Number Of Agreements Cash received as due under collaboration agreement. Cash received as due under collaboration agreement Cash Received As Due Under Collaboration Agreement Revenues Contract liabilities Contract assets Contract With Customer Asset Net Current Number of additional targets for development, regulatory and sales milestone payments. Research collaboration and option agreement. Research Collaboration and Option Agreement Research Collaboration And Option Agreement [Member] Janssen ARO-JNJ1. ARO-JNJ1 A R O J N J1 [Member] Development, regulatory and sales milestones payments Number of additional targets for development, regulatory and sales milestone payments Number Of Additional Targets For Development Regulatory And Sales Milestone Payments Number of distinct performance obligations. Number of distinct performance obligations Number Of Distinct Performance Obligations Initial transaction price. Initial transaction price Initial Transaction Price Contract liabilities Contract With Customer Liability Research equipment gross. Computers, office equipment and furniture Furniture And Fixtures Gross Research equipment Research Equipment Gross Software Capitalized Computer Software Gross Leasehold improvements Leasehold Improvements Gross Total gross fixed assets Property Plant And Equipment Gross Less: Accumulated depreciation and amortization Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Property and equipment, net Depreciation and amortization expense for property and equipment Depreciation Depletion And Amortization Schedule Of Held To Maturity Securities [Table] Schedule Of Held To Maturity Securities [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] Commercial notes due within one year. Commercial Notes Due Within One Year Commercial Notes Due Within One Year [Member] Commercial notes due within two years. Commercial Notes Due Within Two Years Commercial Notes Due Within Two Years [Member] Commercial notes due within three years. Commercial Notes Due Within Three Year Commercial Notes Due Within Three Years [Member] Schedule Of Held To Maturity Securities [Line Items] Schedule Of Held To Maturity Securities [Line Items] Amortized Cost Held To Maturity Securities Gross Unrealized Gains Held To Maturity Securities Accumulated Unrecognized Holding Gain Gross Unrealized Losses Held To Maturity Securities Accumulated Unrecognized Holding Loss Fair Value Held To Maturity Securities Fair Value Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Asset acquisition. Asset Acquisition Asset Acquisition [Axis] Asset acquisition. Asset Acquisition Asset Acquisition [Domain] Novartis. Novartis Novartis [Member] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Licensing Agreement Licensing Agreements [Member] Patents Patents [Member] Finite Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Amortization period of intangible assets Finite Lived Intangible Asset Useful Life Finite-lived intangible assets, accumulated amortization Finite Lived Intangible Assets Accumulated Amortization Amortization expense Amortization Of Intangible Assets Amortization of license agreements remainder of fiscal year 2020 Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Amortization of license agreements in 2021 Finite Lived Intangible Assets Amortization Expense Year Two Amortization of license agreements in 2022 Finite Lived Intangible Assets Amortization Expense Year Three Amortization of license agreements in 2023 Finite Lived Intangible Assets Amortization Expense Year Four Amortization of license agreements in 2024 Finite Lived Intangible Assets Amortization Expense Year Five Amortization of license agreements, thereafter Finite Lived Intangible Assets Amortization Expense After Year Five Intangible Assets Net Excluding Goodwill [Abstract] Intangible assets subject to amortization, beginning balance Intangible assets subject to amortization, Impairment Impairment Of Intangible Assets Finitelived Intangible assets subject to amortization, Amortization Intangible assets subject to amortization, ending balance Schedule Of Stock By Class [Table] Schedule Of Stock By Class [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two thousand four equity incentive plan two thousand thirteen equity incentive plan and inducement grants. 2004 Equity Incentive Plan, 2013 Equity Incentive Plan, and Inducement Grants Two Thousand Four Equity Incentive Plan Two Thousand Thirteen Equity Incentive Plan And Inducement Grants [Member] Underwritten public offering. Public Offering Underwritten Public Offering [Member] Class Of Stock [Line Items] Class Of Stock [Line Items] Capital stock authorized for issuance Capital Units Authorized Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Common Stock, Share reserve for issuance Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Cash inflow from the issuance of common stock before deducting advisory fees and offering expenses. Shares issued to institutional investors Shares Issued Aggregate purchase price paid by investors Proceeds From Issuance Of Common Stock Before Deducting Fees And Offering Expenses Net proceeds from common stock after deducting advisory fees and offering expenses Stock issued, price per share Shares Issued Price Per Share Other Commitments [Table] Other Commitments [Table] Other Commitments Other Commitments [Axis] Other Commitments Other Commitments [Domain] Technology license commitments. Technology License Commitments Technology License Commitments [Member] Other Commitments [Line Items] Other Commitments [Line Items] Contingent liabilities Loss Contingency Accrual At Carrying Value Future commitments Purchase Obligation Commitments expected to be incurred in fiscal 2020 Purchase Obligation Future Minimum Payments Remainder Of Fiscal Year Commitments expected to be incurred beyond fiscal 2020 Purchase Obligation Due In Second Year Milestone payments. Milestone payments Milestone Payments Lease payments commencement date. Expected payments of leasehold improvements, net of tenant improvement allowances. Number of option to renew. Lessee Lease Description [Table] Lessee Lease Description [Table] Counterparty Name Counterparty Name [Axis] Counterparty Name Repurchase Agreement Counterparty Name [Domain] Colorado Owner, LLC. Colorado Owner, LLC Colorado Owner L L C [Member] Property, Plant and Equipment, Type Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Property Plant And Equipment Type [Domain] Corporate Headquarters in Pasadena Corporate Headquarters In Pasadena Corporate Headquarters In Pasadena [Member] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] California CALIFORNIA Research facility in Madison. Research Facility in Madison Research Facility In Madison [Member] Wisconsin WISCONSIN Lessee Lease Description [Line Items] Lessee Lease Description [Line Items] Lease term Lessee Operating Lease Term Of Contract Office space leases, in square feet Land Subject To Ground Leases Lease payments, commencement date Lease Payments Commencement Date Estimated lease payments Operating Leases Future Minimum Payments Due Expected leasehold improvements, net of tenant improvement allowances Expected Payments Of Leasehold Improvements Net Of Tenant Improvement Allowances Operating lease renewal term Lessee Operating Lease Renewal Term Number of options to renew Number Of Option To Renew Lease expiration month and year. Operating lease expiration month and year Lease Expiration Month And Year Estimated lease payments Lessee Operating Lease Liability Payments Due Operating lease cost Operating Lease Cost Variable lease cost Variable Lease Cost Short-term lease cost Short Term Lease Cost 2020 (remainder of fiscal year) Lessee Operating Lease Liability Payments Remainder Of Fiscal Year 2021 Lessee Operating Lease Liability Payments Due Year Two 2022 Lessee Operating Lease Liability Payments Due Year Three 2023 Lessee Operating Lease Liability Payments Due Year Four 2024 Lessee Operating Lease Liability Payments Due Year Five 2025 and thereafter Lessee Operating Lease Liability Payments Due Year Six And After Year Six Total lease payments Less imputed interest Lessee Operating Lease Liability Undiscounted Excess Amount Total Operating lease liabilities (includes current portion) Operating lease cash payments Operating Lease Payments Weighted-average remaining lease term Operating Lease Weighted Average Remaining Lease Term1 Weighted-average discount rate Operating Lease Weighted Average Discount Rate Percent 2020 Operating Leases Future Minimum Payments Due Current 2021 Operating Leases Future Minimum Payments Due In Two Years 2022 Operating Leases Future Minimum Payments Due In Three Years 2023 Operating Leases Future Minimum Payments Due In Four Years 2024 Operating Leases Future Minimum Payments Due In Five Years 2025 and thereafter Operating Leases Future Minimum Payments Due Thereafter Total Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Two thousands four equity incentive plan. 2004 Equity Incentive Plan Two Thousands Four Equity Incentive Plan [Member] Two thousands thirteen incentive plan. 2013 Incentive Plan Two Thousands Thirteen Incentive Plan [Member] Outside of equity compensation plans. Outside Of Equity Compensation Plans Outside Of Equity Compensation Plans [Member] Award Type Award Type [Axis] Award Type Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Employee Stock Option Employee Stock Option [Member] Restricted Stock Units (RSUs) Restricted Stock Units R S U [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Shares reserve for issuance Common Stock Capital Shares Reserved For Future Issuance Number of options outstanding Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Number of restricted stock units outstanding Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number Number of options outstanding, granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Number of restricted stock units outstanding, granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Number of Options Outstanding, beginning balance Number of Options Outstanding, Granted Number of Options Outstanding, Cancelled Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period Number of Options Outstanding, Exercised Number of Options Outstanding, ending balance Number of Options Outstanding, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Weighted-Average Exercise Price Per Share, beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Cancelled Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Exercised Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, ending balance Weighted-Average Exercise Price Per Share, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Weighted-Average Remaining Contractual Term Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Weighted-Average Remaining Contractual Term, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Aggregate Intrinsic Value, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Stock-based compensation expense Allocated Share Based Compensation Expense Grant date fair value of the options granted during the period. Grant date fair value of the options granted Grant Date Fair Value Of Options Granted During Period Intrinsic value of options exercised Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value Unrecognized pre-tax compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Weighted average period to recognize pre-tax compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract] Dividend yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Risk-free interest rate, minimum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum Risk-free interest rate, maximum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum Volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Volatility, minimum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum Volatility, maximum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum Expected life (in years) Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Weighted average grant date fair value per share of options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value RSU awards vesting, description Share Based Compensation Arrangement By Share Based Payment Award Description Number of RSUs, Unvested, beginning of period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Number of RSUs, Granted Number of RSUs, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Number of RSUs, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Number of RSUs, Unvested, End of period Weighted-Average Grant Date Fair Value, beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value, ending balance Unrecognized pre-tax compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Held to maturity securities fair value non current. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Measurement Frequency Fair Value By Measurement Frequency [Axis] Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value Measurements Recurring [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Level 1 Fair Value Inputs Level1 [Member] Level 2 Fair Value Inputs Level2 [Member] Level 3 Fair Value Inputs Level3 [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 and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Short-term investments Long-term investments Held To Maturity Securities Fair Value Non Current Contingent consideration Business Combination Contingent Consideration Liability Noncurrent Contingent consideration obligations