Leases Lease Disclosure [Text Block] The entire disclosure of information about leases. Nonrecourse liability related to sale of future royalties, current portion Non Recourse Debt Sale of Future Royalties Current Current portion of debt 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 (Level 3) Fair Value, Inputs, Level 3 [Member] Operating leases cost Lease, Cost [Abstract] Development Agreement Collaborative Arrangement, Transaction with Party to Collaborative Arrangement [Member] Share-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Total current liabilities Liabilities, Current Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Current Assets Amount of increase (decrease) in prepaid expenses, and other current assets. Long term marketable securities Debt Securities, Available-for-sale, Noncurrent 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. Asset Class [Axis] Asset Class [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Other noncurrent assets Increase (Decrease) in Other Noncurrent Assets Other comprehensive (loss) earnings Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Concentration of Credit Risk Concentration Risk [Line Items] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Cost of goods sold Cost of Goods and Services Sold Current Fiscal Year End Date Current Fiscal Year End Date Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Total revenues Net product sales Revenues Common stock issued upon conversion of notes (in shares) Debt Conversion, Converted Instrument, Shares Issued Marketable securities Marketable Securities, Current Diluted (in shares) Weighted average shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Total Fair Value Reported Value Measurement [Member] 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 Payables and Accruals [Abstract] Payables and Accruals [Abstract] Unamortized debt discount and deferred financing costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Impairment due to credit losses Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded Guaranteed minimum amounts Minimum Guaranteed Amounts Owed to Company Minimum guaranteed amount owed to company from license and royalty revenue. Fair Value Convertible Debt, Fair Value Disclosures Accumulated Other Comprehensive Earnings (Loss) AOCI Attributable to Parent [Member] Interest expense on nonrecourse liability related to sale of future royalties Interest Expense, Other Total assets Assets Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Shell Company Entity Shell Company Total lease liabilities Present value of lease liabilities Operating Lease, Liability Cover page. Cover [Abstract] Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 3 years to 4 years Available For Sale Securities Debt Maturities Three Years Through Four Years Fair Value 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. Document Type Document Type Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Other liabilities Increase (Decrease) in Other Noncurrent Liabilities Gross unrealized losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Subsequent Event Subsequent Event [Member] Construction-in-progress Construction in Progress [Member] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Income taxes payable Accrued Income Taxes, Current Accounts receivable Increase (Decrease) in Accounts Receivable 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four Current liabilities Liabilities, Current [Abstract] Lease assets and tenant receivables obtained for new operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Royalty revenue agreements Royalty Agreements [Member] Inventories Inventory, Policy [Policy Text Block] Financial Instrument [Axis] Financial Instrument [Axis] Document Quarterly Report Document Quarterly Report Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Noncash investing and financing activities Noncash Investing and Financing Items [Abstract] Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Notes payable Debt Instrument [Line Items] Debt Instrument [Line Items] Product shelf life Products, Shelf Life Represents the period within which a product can be expired. Strike price of the warrant transactions (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Payments to acquire Series D Preferred Shares Payments to Acquire Additional Interest in Subsidiaries Less than 1 year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Money market funds Money Market Funds [Member] Advertising costs Advertising Expense Long term marketable securities Debt Securities, Noncurrent [Abstract] Asset Class [Domain] Asset Class [Domain] Entity File Number Entity File Number Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Leases Lessee, Lease, Description [Line Items] Earnings per share Earnings Per Share, Basic and Diluted [Abstract] Accrued product returns Accrued Product Returns Represents the amount of accrued product returns. Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Document Fiscal Period Focus Document Fiscal Period Focus Financial Instruments [Domain] Financial Instruments [Domain] Other comprehensive (loss) earnings Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Payment for option issue fee Collaborative Arrangement, Payment For Option Issue Fee Collaborative Arrangement, Payment For Option Issue Fee Product and Service [Domain] Product and Service [Domain] Total potential payments Collaborative Arrangement, Potential Payments Collaborative Arrangement, Potential Payments Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Operating earnings Operating Income (Loss) Measurement Frequency [Domain] Measurement Frequency [Domain] Statement [Line Items] Statement Statement [Line Items] Summary of disaggregation of revenues by nature Disaggregation of Revenue [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Advertising Expense Advertising Cost [Policy Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Basic (in dollars per share) Earnings per share, basic (in dollars per share) Earnings Per Share, Basic Inventories Inventory Disclosure [Text Block] 1 year to 2 years Available For Sale Securities Debt Maturities After One Through Two Years Fair Value Fair value of available-for-sale debt securities maturing after the first year through the second 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. 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 Comprehensive earnings Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accrued clinical trial costs Accrued Clinical Trial and Clinical Supply Costs Current Represents the amount of clinical trial and clinical supply costs accrued. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Schedule of balance sheet information related to leases Lease Balance Sheet Disclosure [Table Text Block] Tabular disclosure of balance sheet information related to leases. Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Amendment Flag Amendment Flag Weighted- Average Exercise Price (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Amortized cost Debt Securities, Available-for-sale, Amortized Cost Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Common stock shares outstanding (in shares) Common Stock, Shares, Outstanding Weighted-average shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Customer [Axis] Customer [Axis] Use of Estimates Use of Estimates, Policy [Policy Text Block] Increase in fixed monthly rental payments Operating Leases, Rental Expenses, Annual increase in Rental Payments, Percentage The percentage of increase in fixed monthly rental payments on each anniversary of the lease commencement date. Tenant improvement allowance Operating Leases Additional Allowance for Tenant and Capital Improvement Represents the additional amount of payments that the lessee can elect to make in connection with tenant and capital improvement allowances under the terms of an agreement classified as an operating lease. 0.625% Convertible Senior Notes due 2023 Convertible Notes Payable [Member] Local Phone Number Local Phone Number Accrued Expenses and Other Current Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Property and equipment Property, Plant and Equipment [Line Items] Total future minimum lease payments Lessee, Operating Lease, Liability, Payments, Due Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Additional paid-in capital Additional Paid in Capital Finished goods Inventory, Finished Goods, Net of Reserves Convertible Senior Notes Due 2023 Long-term Debt [Text Block] Work in process Inventory, Work in Process, Net of Reserves Forfeited (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Schedule of share-based compensation expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Granted (in shares) Granted options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Schedule of gross carrying amount and related accumulated amortization of the intangible assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Accrued product rebates Accrued Rebates Represents the amount of accrued rebates. Optional lease renewal term Lessee, Operating Lease, Renewal Term Total current assets Assets, Current Entity Current Reporting Status Entity Current Reporting Status Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect 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. Net earnings Net earnings Net earnings Net earnings Net Income (Loss) Attributable to Parent Common Stock Common Stock [Member] Current assets Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Share-Based Payments Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Sales Returns Sales Returns and Allowances [Member] Amortization of deferred financing costs and debt discount Non-cash interest expense Amortization of Debt Issuance Costs and Discounts 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 Net earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Product and Service [Axis] Product and Service [Axis] Total operating lease cost Operating Lease, Cost Warrants issued (in shares) Class of Warrant or Right, Outstanding Entity Small Business Entity Small Business Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Entity Filer Category Entity Filer Category Additional cash payments upon milestone achievements Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Other accrued expenses Other Accrued Liabilities, Current Share-based compensation expense Share-based Payment Arrangement, Expense Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total liabilities and stockholders’ equity Liabilities and Equity 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. Entity Address, City or Town Entity Address, City or Town Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Selling, general and administrative Selling, General and Administrative Expenses [Member] Concentration risk percentage (more than) Concentration Risk, Percentage Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Lease liabilities, long term Operating Lease, Liability, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Exercise of stock options (in shares) Stock Issued During Period Shares Stock Options and Warrants Exercised Number of share options and warrants (or share units) exercised during the current period. Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Corporate debt securities Corporate Debt Securities [Member] Other income (expense) Other Nonoperating Income (Expense) [Abstract] Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Weighted average fair value, grant date, options (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Property and equipment additions from utilization of tenant improvement allowance Property And Equipment Acquired Under Build To Suit Lease Transaction Property And Equipment Acquired Under Build To Suit Lease Transaction Subsequent Events Subsequent Events [Text Block] Other noncurrent assets Other Assets, Noncurrent [Abstract] Accrued product returns and rebates Increase (Decrease) in Accrued Product Returns and Rebates Amount of increase (decrease) in product returns and rebates. Revenues Revenues [Abstract] Vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Recurring Fair Value, Recurring [Member] Interest expense Other Nonoperating Expense 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] Award Type [Axis] Award Type [Axis] Marketable securities - restricted (SERP) Assets for Plan Benefits, Defined Benefit Plan Total other income (expense) Other Nonoperating Income (Expense) Subsequent Events [Abstract] Costs and expenses Costs and Expenses [Abstract] Accumulated other comprehensive earnings (loss), net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Cash paid for operating leases Operating Lease, Payments Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Retained Earnings Retained Earnings [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Line Items] Subsequent Event [Line Items] Document Period End Date Document Period End Date Numerator, dollars in thousands: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Statement [Table] Statement [Table] Entity Registrant Name Entity Registrant Name Threshold for development costs payments Collaborative Arrangement, Threshold For Development Costs Payments Collaborative Arrangement, Threshold For Development Costs Payments Summary of liability component of 2023 Notes Convertible Debt [Table Text Block] Convertible note hedge options issued (in shares) Debt Conversion, Converted Instrument, Warrants or Options Issued Interest income, net Other Nonoperating Income Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Maximum Maximum [Member] Share-based payments Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] 2 years to 3 years Available For Sale Securities Debt Maturities Two Years Through Three Years Fair Value 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. Accounts Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of fair value of the financial assets and liabilities Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Receivables [Abstract] Receivables [Abstract] 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Outstanding at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Ownership [Axis] Ownership [Axis] Capitalized patent defense costs Patent Defense Costs [Member] Represents information concerning the capitalized patent defense costs related to the Watson litigation. Total fair value Total Debt Securities, Available-for-sale Retained earnings Retained Earnings (Accumulated Deficit) Deferred legal fees and fixed assets included in accounts payable and accrued expenses Non Cash Capitalized Cost Of Intangible Assets Represents the non-cash expenses related to intangible assets that were capitalized and shown within accrued expenses. Entity Tax Identification Number Entity Tax Identification Number Intangible Assets Intangible Assets Disclosure [Text Block] 2023 Notes Debt Instrument, Face Amount Diluted (in dollars per share) Earnings per share, diluted (in dollars per share) Earnings Per Share, Diluted Trading Symbol Trading Symbol Minimum Minimum [Member] Marketable Securities Marketable Securities, Policy [Policy Text Block] Deferred income tax benefit Deferred Income Tax Expense (Benefit) Statistical Measurement [Domain] Statistical Measurement [Domain] Disaggregation of Revenue [Abstract] Disaggregation of Revenue [Abstract] 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] Summary of stock options and SAR activities Share-based Payment Arrangement, Option, Activity [Table Text Block] Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Income tax expense Income Tax Expense (Benefit) Operating leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Share-Based Payments Share-based Payment Arrangement [Text Block] Accrued professional fees Accrued Professional Fees, Current 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two Required security deposit Security Deposit Computer equipment Computer Equipment [Member] Other liabilities Other Liabilities, Noncurrent Provision for product returns Revenue From Contract With Customer, Products Returns Allowance Revenue From Contract With Customer, Products Returns Allowance Trokendi XR Trokendi Xr [Member] Represents information pertaining to Trokendi XR patent litigation. City Area Code City Area Code Intangible assets, net Total Intangible Assets, Net (Excluding Goodwill) Title of 12(b) Security Title of 12(b) Security Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Total assets at fair value Total assets at fair value Assets, Fair Value Disclosure Revenue Recognition Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Counterparty Name [Axis] Counterparty Name [Axis] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Concentration Risk [Table] Concentration Risk [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Deferred income taxes Deferred Income Tax Assets, Net 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. Schedule of maturities of operating lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Software Computer Software, Intangible Asset [Member] Weighted average fair value, grant date, (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 Weighted- Average Remaining Contractual Term (in years) Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Assets Assets [Abstract] Gross unrealized gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Balance (in shares) Balance (in shares) Shares, Outstanding Number of operating segments Number of Operating Segments Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Organization and Business Nature of Operations [Text Block] Performance-Based Awards Performance Shares [Member] Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Conversion rate for the notes (in shares per $1,000 principal amount) Debt Instrument, Convertible, Conversion Ratio Measurement Basis [Axis] Measurement Basis [Axis] Earnings per basic and diluted share (in dollars per share) Earnings Per Share, Basic and Diluted Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Customer [Domain] Customer [Domain] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Lab equipment and furniture Lab Equipment And Furniture [Member] Represents information pertaining to lab equipment and furniture. Schedule of inventories Schedule of Inventory, Current [Table Text Block] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance sheet information related to leases Assets and Liabilities, Lessee [Abstract] Income Statement Location [Domain] Income Statement Location [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Number of Options and SAR Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Number of commercial products Number Of Proprietary Commercial Products The number of proprietary commercial products market by the company. Accounts payable Increase (Decrease) in Accounts Payable Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Income taxes paid Income Taxes Paid, Net Schedule of property and equipment Schedule of Property Plant and Equipment Components [Table Text Block] Tabular disclosure of the components of property, plant and equipment. Accrued Product Returns and Rebates Accrued Product Returns and Rebates [Text Block] The entire disclosure for accrued product returns and rebates. Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] 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. Common stock shares authorized (in shares) Common Stock, Shares Authorized Less accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 2023 Notes Percentage Of0.625 Convertible Senior Notes Due2023 [Member] Represents information pertaining to 0.625% Convertible Senior Notes due 2023. Entity Central Index Key Entity Central Index Key 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. Entity Emerging Growth Company Entity Emerging Growth Company Selling, general and administrative Selling, General and Administrative Expense Lease liabilities, current Lease liabilities, current Operating Lease, Liability, Current Share-based compensation expense Share-based Payment Arrangement, Noncash Expense Schedule of computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Assets: Assets, Fair Value Disclosure [Abstract] Income Taxes Income Tax, Policy [Policy Text Block] Other Income (Expense) Other Nonoperating Income and Expense [Text Block] Accrued compensation Employee-related Liabilities, Current 2020 (remaining) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Income Taxes Income Tax Disclosure [Text Block] Deferred legal fees Payments to Acquire Intangible Assets Purchases of marketable securities Payments to Acquire Marketable Securities USWM Enterprises, LLC USWM Enterprises, LLC [Member] USWM Enterprises, LLC 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. Concentration Risk Type [Axis] Concentration Risk Type [Axis] Organization and Nature of Operations Organization and Nature of Operations Research and Development Expense and Related Accrued Research and Development Expenses Research and Development Expense, Policy [Policy Text Block] Net product sales Product [Member] U.S. government agency and municipal debt securities US Government Agencies Debt Securities [Member] Accrued expenses and other current liabilities Total Other Accounts Payable and Accrued Liabilities Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Unrealized (loss) gain on marketable securities, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Other assets Other Assets, Noncurrent Additional disclosures Intangible Assets, Net (Excluding Goodwill) [Abstract] Initial fixed monthly rental rate Operating Leases, Rental Expenses, Initial Fixed Monthly Rental Payments The amount of fixed monthly rental payments due under the lease agreement. Amortization of premium/discount on marketable securities Investment Income, Net, Amortization of Discount and Premium Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Convertible notes, net Carrying Value Total carrying value Convertible Notes Payable, Noncurrent Marketable securities Debt Securities, Current [Abstract] Market-Based Awards Market Based Performance Shares [Member] Market Based Performance Shares 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 Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Subsequent Event [Table] Subsequent Event [Table] Accounting Policies [Abstract] Accounting Policies [Abstract] Income taxes payable Increase (Decrease) in Income Taxes Payable Additional  Paid-in Capital Additional Paid-in Capital [Member] Disaggregated Revenues Revenue from Contract with Customer [Text Block] Number of established marketed products Number Of Established Marketed Products Number Of Established Marketed Products Sales return period prior to expiry date Sales Return Period Prior To Expiration Represents the period within which a product can be returned by the customers to the entity prior to the expiry date. Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Share-Based Compensation Share-based Payment Arrangement [Policy Text Block] Fair Value Measurement [Domain] Fair Value Measurement [Domain] 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. Interest rate Debt Instrument, Interest Rate, Stated Percentage Entity Address, Address Line One Entity Address, Address Line One Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Upfront cash payment Collaborative Arrangement, Upfront Cash Payments Collaborative Arrangement, Upfront Cash Payments Municipal debt securities Municipal Bonds [Member] Property and equipment, gross Property, Plant and Equipment, Gross Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Noncash interest expense Interest Expense Non Recourse Royalty Liability Interest incurred in the period on the non-recourse sale of future royalty liability arrangement that was charged against earnings. Upfront cash payment Payments to Acquire Businesses, Gross Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Entity Address, State or Province Entity Address, State or Province Income Statement Location [Axis] Income Statement Location [Axis] Business Acquisition [Axis] Business Acquisition [Axis] Customer Concentration Risk Customer Concentration Risk [Member] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Schedule of contractual maturities of the unrestricted available-for-sale marketable securities held Investments Classified by Contractual Maturity Date [Table Text Block] Maximum contractual term of share-based grants Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Interest income Interest Income, Other Consideration transferred Business Combination, Consideration Transferred Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Accounts payable Accounts Payable, Current 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. Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Entity Interactive Data Current Entity Interactive Data Current Common stock shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Total costs and expenses Costs and Expenses Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Income per share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Inventories, net Total inventories Inventory, Net Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Interest expense Interest Expense, Debt Measurement Frequency [Axis] Measurement Frequency [Axis] Earnings per Share Earnings Per Share [Text Block] Conversion price, per share of common stock (in dollars per share) Debt Instrument, Convertible, Conversion Price Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Raw materials Inventory, Work in Process and Raw Materials, Net of Reserves Exercise of stock options Stock Issued During Period Value Stock Options and Warrants Exercised Value of stock issued as a result of the exercise of stock options and warrants. Award Type [Domain] Award Type [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Leasehold improvements Leasehold Improvements [Member] Cash Cash [Member] Ownership [Domain] Ownership [Domain] Revenues Revenue Benchmark [Member] RSUs Restricted Stock Units (RSUs) [Member] Research and development Research and Development Expense [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Greater than 4 years Available For Sale Securities Debt Maturities, Thereafter, Fair Value Available For Sale Securities Debt Maturities, Thereafter, Fair Value Conversion of debt to equity Debt Conversion, Original Debt, Amount Fair value of financial instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Liabilities Schedule of reconciliation of income tax expense at the U.S Federal statutory income tax rate to the entity's effective income tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Common stock, $0.001 par value; 130,000,000 shares authorized; 52,537,159 and 52,533,348 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively Common Stock, Value, Issued Research and development Research and Development Expense Counterparty Name [Domain] Counterparty Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Inventories Increase (Decrease) in Inventories Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Stock options, PSU, RSU and SAR (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Royalty revenues Royalty [Member] 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. Basic (in shares) Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Lease assets Operating Lease, Right-of-Use Asset Schedule of other income (expense) Schedule of Other Nonoperating Income (Expense) [Table Text Block] Oxtellar XR Oxtellar X R [Member] Represents information pertaining to Oxtellar XR product. Long term marketable securities Marketable Securities, Noncurrent Equity Components [Axis] Equity Components [Axis] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Advertising Expense Marketing and Advertising Expense [Abstract] Total stockholders’ equity Balance Balance Stockholders' Equity Attributable to Parent Amortization expense Amortization of Intangible Assets Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Navitor Navitor Pharmaceuticals, Inc. [Member] Navitor Pharmaceuticals, Inc. Noncash operating lease cost Noncash Operating Lease Cost Noncash Operating Lease Cost Advent Key West, LLC (Landlord) Advent Key West Llc [Member] Represents the information pertaining to Advent Key West, LLC. Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Intangible Assets Finite-Lived Intangible Assets [Line Items] Accrued Product Returns and Rebates Accrued Product Returns and Rebates No definition available. Schedule of lease costs and supplemental cash flow information Lease, Cost [Table Text Block] Depreciation and amortization Depreciation, Depletion and Amortization Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Capitalized patent defense costs Finite-Lived Intangible Assets, Gross Cash paid for interest on convertible notes Interest Paid, Excluding Capitalized Interest, Operating Activities Ownership percentage Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Security Exchange Name Security Exchange Name Common stock equivalents excluded in the calculation of diluted income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Marketable securities Debt Securities, Available-for-sale, Current Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Schedule of financial liabilities that are not carried at fair value Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] Schedule of unrestricted available-for-sale marketable securities Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Equity Component [Domain] Equity Component [Domain] Document Transition Report Document Transition Report Sales and maturities of marketable securities Proceeds from Sale and Maturity of Marketable Securities Weighted- Average Life (Years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life License and collaboration agreements Collaborative Arrangement [Member] Income Statement [Abstract] Income Statement [Abstract] Noncash royalty revenue Non-cash royalty revenue Revenue From Royalty Agreement Represents revenue from the sale of certain royalty and milestone rights. Number of product candidates Number Of Product Candidates Number Of Product Candidates