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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating Activities:    
Net income (loss) $ 6,112 $ (17,985)
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation 314 364
Amortization of intangible asset 0 9,011
Bad debt expense 702 0
Change in fair value of warrant liability (155) 129
Non-cash royalty revenue related to sale of future royalties (369) (391)
Non-cash interest expense 6,253 326
Non-cash operating lease expense 1,104 1,017
Non-cash loss on extinguishment of debt 0 294
Write-down of inventory 163 590
Gain on the sale of property and equipment (172) 0
Stock-based compensation expense 2,187 2,360
Changes in operating assets and liabilities:    
Accounts receivable (27,872) 12,670
Inventory (4,953) (4,434)
Prepaid expenses and other current assets 2,212 1,412
Other long-term assets 54 (613)
Accounts payable (2,234) (7,501)
Accrued expense and other current liabilities 2,771 (15,045)
Operating lease liabilities (1,310) (731)
Deferred revenue 1,241 695
Other long-term liabilities 365 (1,600)
Net cash used in operating activities (13,587) (19,432)
Investing Activities:    
Purchases of equipment (18) 0
Proceeds from the sale of property and equipment 172 0
Net cash provided by (used in) investing activities 154 0
Financing Activities:    
Proceeds from the issuance of debt 10,000 37,000
Payments of issuance costs related to BlackRock Credit Agreement (63) (750)
Proceeds from issuance of common stock, net of issuance costs 64,907 18,740
Proceeds from issuance of stock under employee stock purchase plan 78 70
Proceeds from the exercise of stock options 482 141
Repayment of term debt (462) (36,726)
Net cash provided by financing activities 74,942 18,475
Increase (decrease) in cash, cash equivalents and restricted cash 61,509 (957)
Cash, cash equivalents and restricted cash — beginning of period 53,550 44,579
Cash, cash equivalents and restricted cash — end of period 115,059 43,622
Non-cash financing activities    
Issuance of warrants in connection with BlackRock Credit Agreement 2,199 4,846
Unpaid issuance costs related to BlackRock Credit Agreement $ 0 $ 522