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CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Activities:      
Net loss $ (5,345) $ (69,410) $ (51,925)
Adjustments to reconcile net loss to net cash used in operating activities:      
Depreciation 1,269 1,462 1,585
Amortization of intangible asset 0 36,042 36,042
Bad debt expense 1,479 876 0
Change in fair value of warrant liability 3,099 330 0
Non-cash royalty revenue related to sale of future royalties (1,768) (1,895) (1,977)
Non-cash research and development expense 0 0 782
Non-cash interest expense 21,808 13,069 (2,228)
Non-cash operating lease expense 4,555 4,198 4,219
Non-cash loss on extinguishment of debt 0 294 0
Non-cash write-off on termination of lease 0 0 (825)
Charge for purchase of IPR&D asset 12,807 0 0
Write-down of inventory 2,505 4,208 1,580
Change in excess inventory purchase commitments 0 2,068 1,533
Stock-based compensation expense 11,283 7,775 9,317
Gain on the sale of property and equipment (172) 0 0
Change in fair value of embedded debt derivative 0 0 (760)
Changes in operating assets and liabilities:      
Accounts receivable (14,142) 4,046 994
Inventory (23,125) (28,401) (2,542)
Prepaid expenses and other current assets 7,579 8,893 11,839
Other long-term assets (2,622) 622 (1,361)
Accounts payable 3,082 (1,364) (5,244)
Accrued expense and other current liabilities 48,530 (12,777) (10,021)
Operating lease liabilities (5,399) (4,491) (4,963)
Deferred revenue 2,681 0 (3,738)
Other long-term liabilities (112) (6,204) (5,691)
Net cash provided by (used in) operating activities 67,992 (40,659) (23,384)
Investing Activities:      
Purchase of equipment (291) (33) 0
Proceeds from the sale of property and equipment 172 0 0
Purchase of IPR&D asset, including transaction costs (7,807) 0 0
Net cash used in investing activities (7,926) (33) 0
Financing Activities:      
Proceeds from the issuance of debt 10,000 45,000 0
Payments of issuance costs related to BlackRock Credit Agreement (63) (1,272) 0
Proceeds from the issuance of common stock, net of issuance costs 66,449 42,495 6,708
Proceeds from the sale of stock under employee stock purchase plan 230 154 85
Proceeds from the exercise of common stock options 1,684 385 1
Repayment of WCF liability (1,146) 0 0
Repayment of liability related to settlement royalties (3,765) 0 0
Repayment of term debt (462) (37,099) (32,000)
Net cash provided by (used in) financing activities 72,927 49,663 (25,206)
Increase (decrease) in cash, cash equivalents and restricted cash 132,993 8,971 (48,590)
Cash, cash equivalents and restricted cash at beginning of the period 53,550 44,579 93,169
Cash, cash equivalents and restricted cash at end of the period 186,543 53,550 44,579
Supplemental cash flow information      
Issuance of warrants in connection with BlackRock Credit Agreement 2,199 4,846 0
Cashless exercise of warrants in connection with BlackRock Credit Agreement 7,494 0 0
Purchase of IPR&D asset included in accrued expenses and other current liabilities 5,000 0 0
Cash paid for interest $ 6,080 $ 5,035 $ 6,059