Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Accrued product returns and rebates Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Award Timing Predetermined Award Timing Predetermined [Flag] Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Limitation on officers' compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Limitation On Compensation, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Limitation On Compensation, Amount Tabular List, Table Tabular List [Table Text Block] Sales return period subsequent to expiry date Sales Return Period Represents the period within which a product can be returned by the customers to the entity subsequent to the expiry date. Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Business combination, consideration transferred, liabilities incurred Business Combination, Consideration Transferred, Liabilities Incurred Research and development credits Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount Stock options and stock awards Share-Based Payment Arrangement [Member] Goodwill [Line Items] Goodwill [Line Items] License License [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Total fair value of liabilities assumed, measurement period adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liability Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liability Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Disaggregated Revenues Revenue from Contract with Customer [Text Block] Intangible Asset, Indefinite-Lived [Table] Intangible Asset, Indefinite-Lived [Table] Total current tax expense (benefit) Current Income Tax Expense (Benefit) Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk percentage Concentration Risk, Percentage Consolidation Consolidation, Policy [Policy Text Block] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Federal Federal Income Tax Expense (Benefit), Continuing Operations Stock Option Share-Based Payment Arrangement, Option [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Deferred tax assets, tax deferred expense Deferred Tax Assets, Tax Deferred Expense Antidilutive Securities [Axis] Antidilutive Securities [Axis] Equity instruments other than options, vest date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Total stockholders' equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] Common stock, authorized (in shares) Common Stock, Shares Authorized Issuance of common stock related to employee stock purchase plan and share-based awards, net of taxes withheld (in shares) Stock Issued During Period, Shares, New Issues Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Liabilities and stockholders' equity Liabilities and Equity [Abstract] State State and Local Jurisdiction [Member] Cover page. Cover [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Maximum Maximum [Member] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Estimated Useful Lives (in years) Finite-Lived Intangible Asset, Useful Life Pennsylvania PENNSYLVANIA Carrying Amount, Net Finite-Lived Intangible Assets, Net Collaborative arrangement, expected development costs Collaborative Arrangement, Expected Development Costs Collaborative Arrangement, Expected Development Costs Insurance Recoveries Insurance Recoveries, Policy [Policy Text Block] Insurance Recoveries, Policy Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Intangible assets, measurement period adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Product shelf life Products, Shelf Life Represents the period within which a product can be expired. Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Schedule of Performance Shares Activity Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Schedule of Share-Based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Amortization of premium/discount on marketable securities Investment Income, Net, Amortization of Discount and Premium Operating lease liabilities, current portion Operating Lease, Liability, Current Nontaxable or nondeductible items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract] Software Software Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Collaborative Arrangements Collaborative Arrangement, Accounting Policy [Policy Text Block] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Lab equipment and furniture Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Schedule of Business Acquisition, Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Investment, Name [Domain] Investment, Name [Domain] Share-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Business Combinations and Contingent Consideration Business Combination [Policy Text Block] Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Schedule of Intangible Assets, Net Schedule of Intangible Assets and Goodwill [Table Text Block] Entity Address, City or Town Entity Address, City or Town Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Total deferred tax asset, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] RSUs Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Schedule of Acquired Intangible Assets Business Combination, Intangible Asset, Acquired, Finite-Lived [Table Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Outstanding at the beginning of the period (in shares) Outstanding at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Customer B Customer B [Member] Represents Customer B. Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Acquired in-process research and development Indefinite-Lived Intangible Assets (Excluding Goodwill) Contingent consideration from Sage Acquisition recognized at Sage Closing Date Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases SPN-820 SPN-820 [Member] SPN-820 Common stock, outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Schedule of Disaggregation of Revenue by Nature Disaggregation of Revenue [Table Text Block] 2012 Plan Equity Incentive Plan2012 [Member] Represents information pertaining to the 2012 Equity Incentive Plan that provides for grants of stock options, purchase rights and awards to employees, officers, directors, consultants or advisors. Current tax expense (benefit) Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Marketable securities - restricted (SERP) Assets for Plan Benefits, Defined Benefit Plan 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] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Number of RSUs Number of PSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax expense (benefit) Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract] Income tax expense (benefit) Total income tax expense (benefit) Income Tax Expense (Benefit) Convertible Notes Payable Convertible Notes Payable [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Property and equipment, gross Property, Plant and Equipment, Gross Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Noncash lease expense Operating Lease, Right-of-Use Asset, Periodic Reduction Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Fixed lease cost Operating Lease, Fixed Lease, Cost Amount of fixed lease cost, excluded from lease liability, recognized when obligation for payment is incurred for operating leases. Goodwill from Sage Acquisition Goodwill, Acquired During Period Proceeds from stock options exercised Proceeds from Stock Options Exercised Acquisition of Sage, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Federal Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Total Accrued Liabilities, Current 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 Other Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Nonvested, beginning balance (in shares) Nonvested, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number USWM Acquisition MDD US Enterprises LLC (Formerly USWM Enterprises) [Member] MDD US Enterprises LLC (Formerly USWM Enterprises) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Nonvested award, option, cost not yet recognized, amount Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments on Credit Line Repayments of Short-Term Debt Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Total fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest Equity Method Investments and Joint Ventures [Abstract] Property and equipment, useful life Property, Plant and Equipment, Useful Life Schedule of Assumptions used in Estimation of Fair Value of Each Award Option on the Date of Grant using Black-Scholes Option-Pricing Model Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Vested and expected to vest (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Money market funds Money Market Funds [Member] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Accrued product returns and rebates Total Accrued Product Returns And Rebates Carrying value as of the balance sheet date of accrued product returns and rebates. Reconciliation Of Valuation Allowance [Roll Forward] Reconciliation Of Valuation Allowance [Roll Forward] Reconciliation Of Valuation Allowance Equity Components [Axis] Equity Components [Axis] Property and equipment Property, Plant and Equipment [Line Items] 2023 Notes Convertible Debt [Member] Royalty, licensing, and other revenues Royalty, licensing, and other revenues Royalty, License And Other Revenue [Member] Royalty, License And Other Revenue Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Lease liabilities, long-term Lease Liabilities, Noncurrent [Abstract] Lease Liabilities, Noncurrent Contingent consideration arrangements, value (in dollars per share) Business Combination, Contingent Consideration Arrangements, Value, Price Per Share Business Combination, Contingent Consideration Arrangements, Value, Price Per Share Net product sales Product [Member] Number of reportable segments Number of Reportable Segments Deferred tax assets: Components of Deferred Tax Assets [Abstract] Advertising Expense Advertising Cost [Policy Text Block] Entity Address, State or Province Entity Address, State or Province Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total current liabilities Liabilities, Current Individual: Individual [Axis] Royalty revenue agreements Royalty Agreements [Member] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Document Annual Report Document Annual Report Research and development Research and Development Expense [Member] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Reportable Segment Reportable Segment [Member] Reportable Segment Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Stock compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Loss on investment Effective Income Tax Rate Reconciliation, Loss On Investment, Amount Effective Income Tax Rate Reconciliation, Loss On Investment, Amount Business Combination, Contingent Consideration, Type [Axis] Business Combination, Contingent Consideration, Type [Axis] Remaining Weighted Average Life (Years) Finite-Lived Intangible Assets, Remaining Amortization Period Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Goodwill and Goodwill Impairment Assessment Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount State State and Local Income Tax Expense (Benefit), Continuing Operations Outstanding contingent consideration liability Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Contingent consideration, long-term Business Combination, Contingent Consideration, Liability, Noncurrent Nontaxable or nondeductible items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract] Capitalized patent defense costs Patent Defense Costs [Member] Represents information concerning the capitalized patent defense costs related to the Watson litigation. Strike price of the warrant transactions (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accrued R&D expenses Accrued Research And Development Expenses, Current Represents the amount of clinical trial and clinical supply costs accrued. Work in process Inventory, Work in Process, Net of Reserves Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Nonvested award, excluding option, cost not yet recognized, amount Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Income tax benefit computed at U.S. federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Operating lease liability Deferred Tax Assets, Operating Lease Liability Deferred Tax Assets, Operating Lease Liability Additions Deferred Tax Assets, Valuation Allowance, Additions Deferred Tax Assets, Valuation Allowance, Additions Contingent consideration, current portion Business Combination, Contingent Consideration, Liability, Current Foreign Foreign Income Tax Expense (Benefit), Continuing Operations Revenue, Remaining Performance Obligation, Type [Domain] Revenue, Remaining Performance Obligation, Type [Domain] Revenue, 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Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Biogen Biogen [Member] Biogen Deferred Financing Costs Debt Instrument, Interest Rate, Stated Percentage [Abstract] Annual Net Sales Of ZURZUVAE 2028 Annual Net Sales Of ZURZUVAE 2028 [Member] Annual Net Sales Of ZURZUVAE 2028 Reductions Deferred Tax Assets, Valuation Allowance, Reductions Deferred Tax Assets, Valuation Allowance, Reductions Insurance recoveries Insurance Recoveries Fair Value as of Grant Date Award Grant Date Fair Value Investments Equity Securities, FV-NI, Cost Schedule of Other (Expenses) Income Schedule of Other Nonoperating Income (Expense) [Table Text Block] Net operating loss carryforwards Operating Loss Carryforwards Changes in unrecognized tax benefits Uncertain income tax position Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Stock options and stock awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Title and Position [Domain] Title and Position [Domain] Total costs and expenses Costs and Expenses Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Number of performance obligations Revenue, Remaining Performance Obligation, Number Of Performance Obligations Revenue, Remaining Performance Obligation, Number Of Performance Obligations Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Additional cash payments upon milestone achievements minimum Business Combination, Contingent Consideration, Range of Outcomes, Minimum, Amount Cash consideration Cash consideration paid for Sage's common stock Payments to Acquire Businesses, Gross Non-PEO NEO Non-PEO NEO [Member] Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Operating lease assets Deferred Tax Liabilities, Leasing Arrangements Variable lease cost Operating Lease, Variable Lease, Cost Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for operating leases. Weighted Average Remaining Contractual Term (in years) Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Gross unrealized gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Leasehold improvements Leasehold Improvements [Member] Advertising costs Advertising Expense Other noncash adjustments, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Operating lease liability Business Combination, Recognized Liability Assumed, Lease Obligation Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Deferred tax expense (benefit) Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Expected dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Contingent consideration, threshold, annual net sales Business Combination, Contingent Consideration, Threshold, Annual Net Sales Business Combination, Contingent Consideration, Threshold, Annual Net Sales Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized Contract with Customer, Liability, Revenue Recognized MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Foreign tax effects Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Deferred income tax assets, net Business Combination, Recognized Asset Acquired, Deferred Tax Asset Contingent consideration loss (gain) Change in fair value of contingent consideration Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Employee Stock Employee Stock [Member] Reclassification to Other Current Liabilities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Reclassification Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Reclassification Revenues Revenues [Abstract] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount [Abstract] Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term Purchase Commitment [Line Items] Long-Term Purchase Commitment [Line Items] Collaboration revenue (ZURZUVAE), location Collaborative Arrangement, Revenue Not from Contract with Customer, Statement of Income or Comprehensive Income [Extensible Enumeration] Financial Instruments [Domain] Financial Instruments [Domain] Total deferred tax liabilities Deferred Tax Liabilities, Gross Lab equipment and furniture Lab Equipment And Furniture [Member] Represents information pertaining to lab equipment and furniture. 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Contingents value rights Business Combination, Contingent Consideration, Number Of Contingent Value Rights Per Common Share Business Combination, Contingent Consideration, Number Of Contingent Value Rights Per Common Share Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] CVR Agreement CVR Agreement [Member] CVR Agreement First Commercial Sale In Japan For ZURZUVAE First Commercial Sale In Japan For ZURZUVAE [Member] First Commercial Sale In Japan For ZURZUVAE State Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Schedule of Customers that Represent more than 10% of Total Revenue and more than 10% of Accounts 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capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Business Combination, Contingent Consideration, Type [Domain] Business Combination, Contingent Consideration, Type [Domain] Percentage of Gross Product Sales Revenue from Contract with Customer Benchmark [Member] Total revenues Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Litigation Status [Domain] Litigation Status [Domain] Vested and expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Aggregate intrinsic value of shares exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Employee taxes paid related to net share settlement 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[Member] Sage Therapeutics, Inc. 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Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities at fair value Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Prepaid expenses and other current assets, measurement period adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Prepaid Expense And Other Asset Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Prepaid Expense And Other Asset Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Employees, Consultants and Advisors Employees Consultants And Advisors [Member] This member represents information pertaining to employees, consultants and advisors Padmanabh Bhatt [Member] Padmanabh Bhatt City Area Code City Area Code Collaborative arrangement, upfront development costs Collaborative Arrangement, Upfront Development Costs Collaborative Arrangement, Upfront Development Costs Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Milestone payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Net deferred tax liabilities Deferred Tax Liabilities, Net General and administrative General and Administrative Expense Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Market-Based Units Market Based Units [Member] Market Based Units Accrued manufacturing expenses Accrued Manufacturing Expenses, Current Accrued Manufacturing Expenses, Current Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Selling, general and administrative Selling, General and Administrative Expenses [Member] Goodwill Beginning balance Ending balance Goodwill Schedule of Lease Costs and Supplemental Cash Flow Information Lease, Cost [Table Text Block] Income tax receivable Income Taxes Receivable Federal Deferred Federal Income Tax Expense (Benefit) Unrecognized Tax Benefits [Roll Forward] Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name Business Organization Nature of Operations [Text Block] Concentration Risk [Table] Concentration Risk [Table] Inventories, net Business Combination, Recognized Asset Acquired, Inventory, Current Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Accounts receivable, net Business Combination, Recognized Asset Acquired, Receivable, Current Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price (per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Marketable Securities Marketable Securities, Policy [Policy Text Block] Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Accrued product returns and rebates Increase (Decrease) In Accrued Product Returns And Rebates Amount of increase (decrease) in product returns and rebates. 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Write-down Unrecognized tax benefits would impact the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Navitor Pharmaceuticals, Inc. Navitor Pharmaceuticals, Inc. [Member] Navitor Pharmaceuticals, Inc. 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