Business Acquisition [Axis] Business Acquisition [Axis] Less than 1 year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Agreement termination notice period Variable Interest Entity, Agreement Termination Notice, Period Variable Interest Entity, Agreement Termination Notice, Period Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Unrealized gain (loss) on marketable securities, net of tax Unrealized gain on marketable securities, net of tax Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Debt Instrument [Axis] Debt Instrument [Axis] Property and equipment, gross Property, Plant and Equipment, Gross APOKYN and SPN-830 APOKYN And SPN-830 [Member] APOKYN And SPN-830 Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Cash, Cash Equivalents and Investments Cash, Cash Equivalents and Investments [Table Text Block] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Additional paid-in capital Additional Paid in Capital Financial Instruments [Domain] Financial Instruments [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Short-Term Debt, Type [Axis] Short-Term Debt, Type [Axis] Interest rate Debt Instrument, Interest Rate, Stated Percentage Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Repayments of debt Repayments of Debt Other noncash adjustments, net Other Noncash Income (Expense) Net earnings Net earnings Net Income (Loss) Attributable to Parent Income per share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock equivalents excluded in the calculation of diluted income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Equity Component [Domain] Equity Component [Domain] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Total assets at fair value Assets, Fair Value Disclosure Investment, Name [Domain] Investment, Name [Domain] Leases Lessee, Operating Leases [Text Block] NAMENDA XR/Namzaric Qui Tam Litigation NAMENDA XR/Namzaric Qui Tam Litigation [Member] NAMENDA XR/Namzaric Qui Tam Litigation Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Number of operating segments Number of Operating Segments Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Address, State or Province Entity Address, State or Province Level 1 Fair Value, Inputs, Level 1 [Member] Convertible notes Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Outstanding at the end of the period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type [Axis] Award Type [Axis] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Operating lease liabilities, current portion Operating Lease, Liability, Current Accrued product returns Accrued Product Returns Represents the amount of accrued product returns. Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Summary of restricted stock units Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Acquired in-process research and development In Process Research and Development [Member] Milestone payments Milestone payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Costs and expenses Costs and Expenses [Abstract] Long-term marketable securities Debt Securities, Noncurrent [Abstract] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Other Commitments [Domain] Other Commitments [Domain] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Total liabilities Liabilities Share-Based Payments Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Amortization of premium/discount on marketable securities Investment Income, Net, Amortization of Discount and Premium Issuance of common stock in connection with the Company’s equity award plans Stock Issued During Period, Value, New Issues Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Schedule of property and equipment Property, Plant and Equipment [Table Text Block] Corporate and municipal debt securities Debt Securities, Available-for-Sale, Current Document Type Document Type Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] 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] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Assets: Assets, Fair Value Disclosure [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Additional cash payments upon milestone achievements minimum Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low Nonvested, beginning balance (in dollars per share) Nonvested, ending balance (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 Debt Debt Disclosure [Text Block] Raw materials Inventory, Work in Process and Raw Materials, Net of Reserves Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company Deferred income tax benefit Deferred Income Tax Expense (Benefit) Greater than 4 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Thereafter Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Thereafter Marketable securities - restricted (SERP) Assets for Plan Benefits, Defined Benefit Plan Acquired developed technology and product rights Developed Technology Rights [Member] Milestone 2024 Milestone 2024 [Member] Milestone 2024 Financial Instrument [Axis] Financial Instrument [Axis] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] APOKYN APOKYN [Member] APOKYN Subsequent Event Subsequent Event [Member] Document Period End Date Document Period End Date Schedule of financial liabilities that are not carried at fair value Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] Accounting Standards Update 2020-06 Accounting Standards Update 2020-06 [Member] Total assets Assets Debt Disclosure [Abstract] Debt Disclosure [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total PSUs Performance Shares [Member] Total Accrued Liabilities, Current Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Interest expense Interest Expense, Debt Accrued compensation, benefits, & related accruals Employee-related Liabilities, Current Line of Credit Line of Credit [Member] Other Commitments [Axis] Other Commitments [Axis] Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Amortization of deferred financing costs and debt discount Amortization of Debt Issuance Costs and Discounts Earnings per Share Earnings Per Share [Text Block] Customer [Axis] Customer [Axis] Composition of Other Balance Sheet Items Supplemental Balance Sheet Disclosures [Text Block] Award Type [Domain] Award Type [Domain] Accrued product rebates Accrued Rebates Represents the amount of accrued rebates. 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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Entity Address, City or Town Entity Address, City or Town Leases [Abstract] Leases [Abstract] Consolidation Consolidation, Policy [Policy Text Block] Market-Based Units Market Based Units [Member] Market Based Units Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Royalty revenues Royalty [Member] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share USB Bank USA Credit Facility USB Bank USA Credit Facility [Member] USB Bank USA Credit Facility Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Investment, Name [Axis] Investment, Name [Axis] Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Fair Value of Financial Measurements Fair Value Disclosures [Text Block] 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. 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Balance at December 31, 2022 Balance at March 31, 2023 (unaudited) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Concentration risk percentage (more than) Concentration Risk, Percentage Subsequent Events [Abstract] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Tax Benefit Income Tax Disclosure [Text Block] Finished goods Inventory, Finished Goods, Net of Reserves Credit Facility [Domain] Credit Facility [Domain] Total intangible assets, carrying amount, gross Intangible Assets, Gross (Excluding Goodwill) Amortization of intangible assets Amortization of Intangible Assets Strike price of the warrant transactions (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Cash paid for interest on convertible notes Interest Paid, Excluding Capitalized Interest, Operating Activities Basic (in dollars per share) Earnings per share, basic (in dollars per share) Earnings Per Share, Basic New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Nonrecourse Royalty Liabilities Nonrecourse Royalty Liabilities [Member] Nonrecourse Royalty Liabilities Loss contingency, damages sought, value Loss Contingency, Damages Sought, Value Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Total stockholders’ equity Balance Balance Stockholders' equity Stockholders' Equity Attributable to Parent Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Entity Interactive Data Current Entity Interactive Data Current Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] 3 years to 4 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year Four Fair value of available-for-sale debt securities maturing in the third fiscal year through the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reconciliation of the beginning and ending balances related to the contingent consideration Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Money market securities and funds Money Market Funds [Member] Threshold for development costs payments Collaborative Arrangement, Threshold For Development Costs Payments Collaborative Arrangement, Threshold For Development Costs Payments Retained Earnings Retained Earnings [Member] Common Stock Common Stock [Member] Schedule of share-based compensation expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Other comprehensive gain (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Contingent consideration Contingent consideration Business Combination, Contingent Consideration, Liability Statement [Table] Statement [Table] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Other income from Navitor (see Note 4) Equity Method Investment, Realized Gain (Loss) on Disposal Document Quarterly Report Document Quarterly Report Current assets Assets, Current [Abstract] Operating lease liabilities, long-term Operating lease liabilities, long-term Operating Lease, Liability, Noncurrent Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Payment of contingent consideration Payment for contingent consideration liability, financing activities Payment for Contingent Consideration Liability, Financing Activities Capitalized patent defense costs Patent Defense Costs [Member] Represents information concerning the capitalized patent defense costs related to the Watson litigation. Acquired in-process research and development Indefinite-Lived Intangible Assets (Excluding Goodwill) Leasehold improvements Leasehold Improvements [Member] Accrued R&D expenses Accrued Research and Development Expenses, Current Represents the amount of clinical trial and clinical supply costs accrued. Retained earnings Retained Earnings (Accumulated Deficit) Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Fair Value (Level 2) Convertible Debt, Fair Value Disclosures Equity Components [Axis] Equity Components [Axis] Cardinal Health Cardinal Health [Member] Cardinal Health Recurring Fair Value, Recurring [Member] Litigation Case [Domain] Litigation Case [Domain] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Document Fiscal Year Focus Document Fiscal Year Focus Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Statement [Line Items] Statement Statement [Line Items] Contingent Consideration Contingent Consideration Disclosure [Text Block] Contingent Consideration Disclosure 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 Indefinite-lived Intangible Assets [Line Items] Indefinite-Lived Intangible Assets [Line Items] Contingent consideration, current portion Business Combination, Contingent Consideration, Liability, Current Total other income (expense) Nonoperating Income (Expense) Carrying Amount, Gross Finite-Lived Intangible Assets, Gross Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Selling, general and administrative Selling, General and Administrative Expense Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Current Contingent consideration (gain) expense Change in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Accrued royalties Accrued Royalties, Current Operating lease assets Operating Lease, Right-of-Use Asset Gross unrealized losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Net product sales Product [Member] Accumulated Other Comprehensive Earnings (Loss) AOCI Attributable to Parent [Member] 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 Schedule of balance sheet information related to leases Lessee, Operating and Finance Lease, Balance Sheet Disclosure [Table Text Block] Lessee, Operating and Finance Lease, Balance Sheet Disclosure Document Transition Report Document Transition Report Local Phone Number Local Phone Number Summary of stock options and SAR activities Share-Based Payment Arrangement, Option, Activity [Table Text Block] Operating earnings Operating Income (Loss) Inventories Increase (Decrease) in Inventories Convertible notes, net Convertible Notes Payable, Current Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Effect of dilutive securities: Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Common stock shares outstanding (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Goodwill Goodwill Other Current Liabilities Other Current Liabilities [Member] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Total liabilities at fair value Liabilities, Fair Value Disclosure Restricted Cash Restricted Cash [Member] Restricted Cash Adjustments to reconcile net earnings to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Trokendi XR Trokendi Xr [Member] Represents information pertaining to Trokendi XR patent litigation. Income tax benefit Income Tax Expense (Benefit) Deferred income tax liabilities, net Deferred Income Tax Liabilities, Net Proceeds from Line of Credit Proceeds from Short-Term Debt Income Statement [Abstract] Income Statement [Abstract] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Additional  Paid-in Capital Additional Paid-in Capital [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Document Fiscal Period Focus Document Fiscal Period Focus Balance, January 1, 2022 Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Cost of goods sold Cost of Goods and Services Sold Impairment due to credit losses Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not Previously Recorded Diluted (in shares) Weighted average shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of inventories Schedule of Inventory, Current [Table Text Block] Schedule of unrestricted available-for-sale marketable securities Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Weighted Average Remaining Contractual Term (in years) Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Common stock, $0.001 par value; 130,000,000 shares authorized; 54,470,622 and 54,253,796 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 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 Other commitment Other Commitment Conversion price, per share of common stock (in dollars per share) Debt Instrument, Convertible, Conversion Price Schedule of common stock equivalents excluded in the calculation of diluted earnings per share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Convertible Debt Convertible Debt [Member] Total Other Nonoperating Expense Product Concentration Risk Product Concentration Risk [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Cash and cash equivalents at beginning of year Cash, cash equivalents, and restricted cash at end of period Total cash, cash equivalents, and restricted cash per statements of cash flows Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Three Major Customers Three Major Customers [Member] Three Major Customers Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current liabilities Liabilities, Current [Abstract] Numerator for dilutive earnings per share Net Income (Loss) Available to Common Stockholders, Basic Marketable securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Common stock shares issued (in shares) Common Stock, Shares, Issued 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 Cash distributions received Proceeds from Divestiture of Businesses and Interests in Affiliates Property and equipment additions from utilization of tenant improvement allowance Capital Expenditures Incurred but Not yet Paid Income Statement Location [Domain] Income Statement Location [Domain] Interest expense on nonrecourse liability related to sale of future royalties Interest Expense, Other Total carrying value Convertible Notes Payable, Noncurrent Fair value of financial instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amendment Flag Amendment Flag Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Principal amount of debt 2023 Notes Debt Instrument, Face Amount Remaining Weighted Average Life (Years) Finite-Lived Intangible Assets, Remaining Amortization Period After-tax interest expense for 2023 Notes Interest on Convertible Debt, Net of Tax Lab equipment and furniture Lab Equipment And Furniture [Member] Represents information pertaining to lab equipment and furniture. Comprehensive earnings Comprehensive Income (Loss), Net of Tax, Attributable to Parent Litigation Case [Axis] Litigation Case [Axis] Construction in Progress Construction in Progress [Member] Gross unrealized gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Entity Current Reporting Status Entity Current Reporting Status Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Other current liabilities Other Liabilities, Current Contingent consideration arrangements, excess acquisition date fair value Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Excess Acquisition Date Fair Value Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Excess Acquisition Date Fair Value Other assets Other Assets, Noncurrent Earnings per share EPS Basic And Diluted [Abstract] EPS Basic And Diluted Long-term marketable securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent Exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Depreciation and amortization Depreciation, Depletion and Amortization Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Total fair value Total Debt Securities, Available-for-Sale, Excluding Accrued Interest McKesson McKesson [Member] McKesson 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 Unamortized debt discount and deferred financing costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Schedule of interest expense Interest Income and Interest Expense Disclosure [Table Text Block] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] 2 years to 3 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year Three Fair value of available-for-sale debt securities maturing in the second fiscal year through the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Number of shares per warrant entitled to holder (in shares) Class of Warrant or Right, Number of Shares in Which Holder Can be Entitled per Warrants at Strike Price Represents the information pertaining to the shares per warrant entitled to holders at strike price. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Allowance for expected sales discounts and allowances Allowance for Expected Sales deductions Represents the allowance for sales discounts related to prompt-pay discounts and contractual fee for service arrangements to wholesalers and distributors. Contingent consideration Increase (Decrease) In Contingent Consideration Increase (Decrease) In Contingent Consideration Liabilities Liabilities [Abstract] Other Commitments Other Commitments [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net 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 Cash and cash equivalents Cash and Cash Equivalents [Abstract] Cash paid for operating leases Operating Lease, Payments Change in fair value recognized in earnings Change in fair value recognized in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Additional cash payments upon milestone achievements maximum Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Forfeited (in shares) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Long-term debt Long-Term Debt Interest and other income, net Other Nonoperating Income (Expense) Balance Sheet Location [Axis] Balance Sheet Location [Axis] Common stock shares authorized (in shares) Common Stock, Shares Authorized Contingent consideration, long-term Business Combination, Contingent Consideration, Liability, Noncurrent Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Schedule of accrued product returns and rebates Schedule of Accrued Product Returns and Rebates [Table Text Block] Tabular disclosure of the accrued product returns and rebates. Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Stock options, RSUs, PSUs Share-Based Payment Arrangement [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Schedule of fair value of the financial assets and liabilities Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Total current assets Assets, Current Cash paid for income taxes Income Taxes Paid, Net Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Other Commitments [Table] Other Commitments [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] Revenues Revenues [Abstract] Carrying Amount, Net Finite-Lived Intangible Assets, Net Restricted cash Restricted Cash Purchases of marketable securities Payments to Acquire Debt Securities, Available-for-Sale Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Software Computer Software, Intangible Asset [Member] Disaggregation of Revenue [Abstract] Disaggregation of Revenue [Abstract] Number of Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Summary of performance stock unit Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Convertible note hedge options issued (in shares) Debt Conversion, Converted Instrument, Warrants or Options Issued Accounts receivable Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Consolidated Entities [Axis] Consolidated Entities [Axis] Total costs and expenses Costs and Expenses Subsequent Event [Line Items] Subsequent Event [Line Items] Notes payable Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Total lease liabilities Operating Lease, Liability Marketable securities Debt Securities, Current [Abstract] Selling, general and administrative Selling, General and Administrative Expenses [Member] Schedule of Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Investments, Debt and Equity Securities [Abstract] Net deferred tax liabilities Deferred Tax Liabilities, Net Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Payment to resolve U.S. Department of Justice allegations Litigation Settlement, Amount Awarded to Other Party Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Inventories, net Total inventories Inventory, Net Annual minimum purchase quantity requirement amount Purchase Commitment, Annual Minimum Amount Committed Purchase Commitment, Annual Minimum Amount Committed Accounts payable Accounts Payable, Current Schedule of accrued expenses and other current liabilities Schedule of Accrued Liabilities and Other Current Liabilities [Table Text Block] Tabular disclosure of the components of accrued liabilities and other current liabilities. Investments Equity Securities, FV-NI, Cost Schedule of contractual maturities of the unrestricted available-for-sale marketable securities held Investments Classified by Contractual Maturity Date [Table Text Block] Number of commercial products Number Of Commercial Products Number Of Commercial Products Business Organization Nature of Operations [Text Block] Convertible Notes Convertible Notes Payable [Member] Entity Filer Category Entity Filer Category Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Basic (in shares) Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Liabilities: Liabilities, Fair Value Disclosure [Abstract] Total Share-Based Payment Arrangement, Expense Noncash investing and financing activities Noncash Investing and Financing Items [Abstract] Security Exchange Name Security Exchange Name Outstanding at the beginning of the period (in dollars per share) Outstanding at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Subsequent Commercial Product Launch Subsequent Commercial Product Launch [Member] Subsequent Commercial Product Launch Property and equipment Property, Plant and Equipment [Line Items] AmerisourceBergen Drug Corporation AmerisourceBergen Drug Corporation [Member] AmerisourceBergen Drug Corporation Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Stock option and Stock Appreciation Rights Stock Option Stock Appreciation Rights [Member] Represents information related to stock option awards for employees and non-employees as well as stock appreciation rights. Payment for contingent consideration liability, operating activities Payment for Contingent Consideration Liability, Operating Activities Cover page. Cover [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Corporate and municipal debt securities Debt Securities, Available-for-Sale, Noncurrent Share-Based Payments Share-Based Payment Arrangement [Text Block] Work in process Inventory, Work in Process, Net of Reserves Business Combinations [Abstract] Disaggregated Revenues Revenue from Contract with Customer [Text Block] Total liabilities and stockholders’ equity Liabilities and Equity Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Extinguishment of debt Extinguishment of Debt, Amount Stock options, RSU and SAR (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Organization, Consolidation and Presentation of Financial Statements [Abstract] Share-based payments Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Diluted (in dollars per share) Earnings per share, diluted (in dollars per share) Earnings Per Share, Diluted Intangible assets, net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Interest Expense Other Nonoperating Income and Expense [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Concentration Risk Type [Axis] Concentration Risk Type [Axis] Total current liabilities Liabilities, Current Performance-Based Units Performance Based Units [Member] Performance Based Units Customer Concentration Risk Customer Concentration Risk [Member] Corporate and municipal debt securities Corporate Debt Securities [Member] Cumulative effect of adoption of ASU 2020-06 Cumulative Effect, Period of Adoption, Adjustment [Member] Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Entity Address, Address Line One Entity Address, Address Line One Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Other assets Other Assets, Noncurrent [Abstract] Adamas Acquisition Adamas [Member] Adamas Product and Service [Axis] Product and Service [Axis] Nonrecourse liability related to sale of future royalties, long term Non Recourse Debt Sale of Future Royalties Noncurrent Noncurrent portion of debt, net of the amount due within one year or the normal operating cycle, if longer, related to the sale of future royalties, for which the creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Interest expense Interest Expense Credit Facility [Axis] Credit Facility [Axis] Oxtellar XR Oxtellar X R [Member] Represents information pertaining to Oxtellar XR product. Sales and maturities of marketable securities Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Long-term Purchase Commitment [Line Items] Long-Term Purchase Commitment [Line Items] Subsequent Event [Table] Subsequent Event [Table] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Navitor Pharmaceuticals, Inc. Navitor Pharmaceuticals, Inc. [Member] Navitor Pharmaceuticals, Inc. Entity Tax Identification Number Entity Tax Identification Number GOCOVRI GOCOVRI [Member] GOCOVRI Contingent consideration arrangements, excess acquisition date fair value, term Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Excess Acquisition Date Fair Value, Term Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Excess Acquisition Date Fair Value, Term Advertising costs Advertising Expense Summary of disaggregation of revenues by nature Disaggregation of Revenue [Table Text Block] The Milestones Milestone 2024 and Milestone 2025 [Member] Milestone 2024 and Milestone 2025 Qelbree Qelbree [Member] Qelbree Cash Cash [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] VIE, qualitative or quantitative information, ownership percentage Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Schedule of effective income tax rate reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Net change in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Uncommitted Secured Credit Line Uncommitted Secured Credit Line [Member] Uncommitted Secured Credit Line Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Measurement Frequency [Axis] Measurement Frequency [Axis] Weighted Average Grant Date Fair 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] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Other accrued expenses Other Accrued Liabilities, Current Type of Adoption [Domain] Accounting Standards Update [Domain] City Area Code City Area Code Accrued sales & marketing Accrued Professional Fees, Current Assets Assets [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Other Commitments [Line Items] Other Commitments [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Line of credit Line of Credit, Current Advertising Expense Advertising Cost [Policy Text Block] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Payments on Line of Credit Repayments of Short-Term Debt Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Warrants issued (in shares) Class of Warrant or Right, Outstanding Other liabilities Other Liabilities, Noncurrent Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Research and development Research and Development Expense [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] SPN-30 Regulatory and Commercial Activities SPN-830 Regulatory And Commercial Activities [Member] SPN-830 Regulatory And Commercial Activities Schedule of computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Accrued manufacturing expenses Accrued manufacturing expenses Accrued manufacturing expenses Lease assets obtained for new operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Summary of liability component of 2023 Notes Convertible Debt [Table Text Block] Non-cash royalty revenue Revenue From Royalty Agreement Represents revenue from the sale of certain royalty and milestone rights. Customer [Domain] Customer [Domain] Accounting Standards Update [Extensible Enumeration] Accounting Standards Update [Extensible Enumeration]