Document and Entity Information Document Information [Table] Document Information [Line Items] Document Type Document Quarterly Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Statement [Line Items] Statement Assets [Abstract] Assets Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net Inventory, Net Inventory Total inventory Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Operating Lease, Right-of-Use Asset Operating lease assets Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Restricted Cash and Cash Equivalents, Noncurrent Restricted cash Deferred Income Tax Assets, Net Deferred tax assets Other Assets, Noncurrent Other noncurrent assets Goodwill Balance at September 30, 2022 Balance at December 31, 2021 Goodwill Assets Total assets Liabilities and Equity [Abstract] Liabilities and shareholders' equity Liabilities, Current [Abstract] Current liabilities Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses Total accrued expenses Carrying value as of the balance sheet date of obligations incurred through that date and payable for rebates, returns and discounts. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Rebates Returns and Discounts Current Accrued rebates, returns and discounts Loans Payable, Current Current portion of term notes payable Operating Lease, Liability, Current Current portion of operating lease liabilities Liabilities, Current Total current liabilities Loans Payable, Noncurrent Term notes payable, net of current portion Convertible Notes Payable, Noncurrent Convertible Notes carrying value Net carrying amount Convertible senior notes, net carrying value Operating Lease, Liability, Noncurrent Operating lease liabilities, net of current portion Liabilities Total liabilities Commitments and Contingencies, Amount Commitments and contingencies (refer to Note 15) Stockholders' Equity Attributable to Parent [Abstract] Shareholders' equity: Preferred Stock, Value, Issued Preferred stock, $0.001 par value; authorized shares - 5,000,000 Common Stock, Value, Issued Common stock, $0.001 par value; authorized shares - 100,000,000; 37,816,843 issued and 34,581,020 outstanding shares at March 31, 2023 and 37,084,759 issued and 33,848,936 outstanding shares at December 31, 2022 Additional Paid in Capital Additional paid-in capital Treasury Stock, Value Treasury stock, at cost; 3,235,823 shares at March 31, 2023 and 3,235,823 shares at December 31, 2022 Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Balance at end of period Balance at beginning of period Total shareholders' equity Liabilities and Equity Total liabilities and shareholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, authorized shares Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, authorized shares Common Stock, Shares, Issued Balance at end of period, shares Balance at beginning of period, shares Common stock, issued shares Common Stock, Shares, Outstanding Common stock, outstanding shares Treasury Stock, Shares Balance at end of period, shares Balance at beginning of period, shares Treasury stock, shares CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Revenues [Abstract] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Product revenues, net Product revenues, net Revenue from Contract with Customer, Product and Service [Extensible List] Cost of Goods and Services Sold [Abstract] Cost of product revenues Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Cost of product revenues (excluding intangible asset amortization) Intangible asset amortization Intangible asset amortization Cost, Product and Service [Extensible List] Cost of Goods and Services Sold Total cost of products revenues Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses Research and Development Expense Research and development Selling, General and Administrative Expense Selling, general and administrative Operating Expenses Total operating expenses Operating Income (Loss) Income (loss) from operations Interest Expense Interest expense Investment Income, Net Interest income Gains (Losses) on Extinguishment of Debt Loss on extinguishment of debt Loss on extinguishment of debt Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Benefit from income taxes Net Income (Loss) Attributable to Parent Net loss Net loss Earnings Per Share, Basic Loss per share - basic (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average shares - basic (in shares) Weighted-average shares outstanding - basic Earnings Per Share, Diluted Loss per share - diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares - diluted (in shares) Weighted-average shares outstanding - diluted (in shares) CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Amortization of Intangible Assets Amortization expense Depreciation Depreciation expense Deferred Income Tax Expense (Benefit) Deferred income taxes Share-based Compensation Stock-based compensation expense The amount of operating lease paid other than in cash. Operating Lease, Payments, Non-cash Non-cash lease expense Amortization of Financing Costs and Discounts Non-cash interest expense for amortization of debt discount and issuance costs Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities Accrued expenses The increase (decrease) during the reporting period in the aggregate amount of rebates, returns and discounts incurred but not yet paid. Increase Decrease in Accrued Rebates Returns and Discounts Accrued rebates, returns and discounts Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments to Acquire Businesses, Net of Cash Acquired Acquisition of BDSI (net of cash acquired) Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Financing activities Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Excluding Stock Options Proceeds from issuances of common stock from employee stock purchase plan Proceeds from Stock Options Exercised Proceeds from the exercise of stock options Payment, Tax Withholding, Share-based Payment Arrangement Payments made for employee stock tax withholdings Payments for Repurchase of Common Stock Repurchases of common stock Repurchases of common stock Repayments of Notes Payable Repayment of term notes The amount of cash inflow from modification of term note. Proceeds from Term Note Modification Proceeds from term note modification Proceeds from Convertible Debt Proceeds from issuances of 2029 Convertible Notes, net of issuance costs of $5,846 Payments For Repurchase of Debt Repurchase of 2026 Convertible Notes, including premium Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by financing activities Net Cash Provided by (Used in) Continuing Operations Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash, cash equivalents and restricted cash at end of period Cash, cash equivalents and restricted cash at beginning of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Reconciliation of cash, cash equivalents and restricted cash to the Consolidated Balance Sheets: Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information Interest Paid Cash paid for interest Income Taxes Paid, Net Cash paid for income taxes Noncash Investing and Financing Items [Abstract] Supplemental disclosure of non-cash activities Noncash or Part Noncash Acquisition, Fixed Assets Acquired Acquisition of property and equipment in accounts payable and accrued expenses Issuance Costs In Accounts Payable And Accrued Expenses Note issuance costs in accounts payable and accrued expenses Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Debt Payments of Debt Issuance Costs Issuance costs Nature of Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Nature of business Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of significant accounting policies Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Revenue from Contracts with Customers Acquisitions Business Combination Disclosure [Text Block] Acquisitions License Agreements [Abstract] License Agreements License Agreements [Text Block] License Agreements [Text Block] License Agreements Earnings Per Share Earnings Per Share [Text Block] Earnings Per Share Fair Value of Financial Instruments Fair Value Disclosures Fair Value of Financial Instruments Inventory Inventory Disclosure [Text Block] Inventory Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses Term Notes Payable Debt Disclosure [Text Block] Term Notes Payable No definition available. Convertible Senior Notes. The entire disclosure of information pertaining to convertible senior notes. Convertible Senior Notes Disclosure [Text Block] Convertible Senior Notes Equity Stockholders' Equity Note Disclosure [Text Block] Equity Stock-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-based Compensation Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Income Taxes Income Tax Disclosure [Text Block] Income Taxes Basis of Accounting, Policy [Policy Text Block] Basis of Presentation New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Contract with Customer, Asset and Liability [Table Text Block] Summary of product revenue provision and allowance Disaggregation of Revenue [Table Text Block] Schedule of disaggregation of revenue Tabular disclosure for consideration paid as at the date of acquisition. Schedule of Consideration Paid [Table Text Block] Schedule of consideration paid for acquisition Schedule of Business Acquisitions, by Acquisition [Table Text Block] Schedule of preliminary allocation of acquisition purchase price Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of computations of basic and diluted net (loss) per share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of dilutive securities excluded from the calculation of diluted earnings per share Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of financial instruments measured at fair value by level within fair value hierarchy Schedule of Inventory, Current [Table Text Block] Schedule of Inventory Schedule of Goodwill [Table Text Block] Summary of changes in the carrying amount of goodwill Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of gross carrying amount and accumulated amortization of the Intangible Asset Finite-lived Intangible Assets Amortization Expense [Table Text Block] Summary of amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of future amortization expenses Schedule of Accrued Liabilities [Table Text Block] Schedule of components of accrued expenses Debt Instrument [Axis] Debt Instrument, Name [Domain] Represents the information pertaining to 2022 Term Loan. 2022 Term Loan