UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net loss	$ (17,985)	$ (26,876)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	364	398
Amortization of intangible asset	9,011	9,011
Change in fair value of warrant liability	129	0
Non-cash royalty revenue related to sale of future royalties	(391)	(425)
Non-cash research and development expense	0	782
Non-cash interest expense	326	502
Non-cash operating lease expense	1,017	(578)
Non-cash loss on extinguishment of debt	294	0
Write-down of inventory	590	335
Stock-based compensation expense	2,360	2,489
Changes in operating assets and liabilities:
Accounts receivable	12,670	21,553
Inventory	(4,434)	7,347
Prepaid expenses and other current assets	1,412	7,378
Other long-term assets	(613)	(2,812)
Accounts payable	(7,501)	(9,013)
Accrued expense and other current liabilities	(15,045)	(25,115)
Operating lease liabilities	(731)	651
Deferred revenue	695	(3,738)
Other long-term liabilities	(1,600)	573
Net cash used in operating activities	(19,432)	(17,538)
Investing Activities:
Net cash used in investing activities	0	0
Financing Activities:
Proceeds from the issuance of debt	37,000	0
Payments of issuance costs related to BlackRock Credit Agreement	(750)	0
Proceeds from issuance of common stock, net of issuance costs	18,740	0
Proceeds from issuance of stock under employee stock purchase plan	70	34
Proceeds from the exercise of stock options	141	0
Repayment of term debt	(36,726)	(16,000)
Net cash provided by (used in) financing activities	18,475	(15,966)
Decrease in cash, cash equivalents and restricted cash	(957)	(33,504)
Cash, cash equivalents and restricted cash — beginning of period	44,579	93,169
Cash, cash equivalents and restricted cash — end of period	43,622	59,665
Non-cash financing activities
Issuance of warrants in connection with BlackRock Credit Agreement	4,846	0
Unpaid issuance costs related to BlackRock Credit Agreement	$ 522	$ 0