UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities:
Net loss	$ (52,539)	$ (88,155)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,191	1,246
Amortization of intangible asset	27,032	27,032
Non-cash interest expense related to sale of future royalties	0	6,352
Non-cash royalty revenue related to sale of future royalties	(1,423)	(1,195)
Non-cash collaboration revenue	0	(9,550)
Non-cash research and development expense	782	3,941
Non-cash interest expense	1,318	1,467
Non-cash operating lease expense	(1,221)	(1,818)
Non-cash write-off from termination of lease	(825)	0
Non-cash loss on extinguishment of debt	0	406
Write-down of inventory	1,327	10,002
Change in excess inventory purchase commitments	0	14,095
Stock-based compensation expense	7,803	14,808
Change in fair value of embedded debt derivative	0	(1,060)
Changes in operating assets and liabilities:
Accounts receivable	17,692	28,312
Inventory	9,238	(5,365)
Prepaid expenses and other current assets	10,043	9,798
Other long-term assets	(8,175)	21,031
Accounts payable	(9,747)	(17,420)
Accrued expense and other current liabilities	(13,735)	(21,534)
Operating lease liabilities	1,128	1,771
Deferred revenue	(3,738)	2,181
Other long-term liabilities	(7,227)	(14,820)
Net cash used in operating activities	(21,076)	(18,475)
Investing Activities:
Purchases of equipment	0	(114)
Net cash used in investing activities	0	(114)
Financing Activities:
Proceeds from refund liabilities to customers	0	40,000
Proceeds from issuance of common stock, net of issuance costs	0	7,122
Proceeds from issuances of stock under employee stock purchase plan	84	410
Proceeds from the exercise of stock options	0	67
Repayments of term debt	(24,000)	(33,000)
Net cash (used in) provided by financing activities	(23,916)	14,599
Decrease in cash, cash equivalents and restricted cash	(44,992)	(3,990)
Cash, cash equivalents and restricted cash — beginning of period	93,169	151,839
Cash, cash equivalents and restricted cash — end of period	$ 48,177	$ 147,849