UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 46,529	$ 90,466
Inventories	18,442	21,568
Accounts receivable, net	22,592	40,284
Prepaid expenses and other current assets	22,039	32,864
Total current assets	109,602	185,182
Property and equipment, net	4,023	5,214
Operating right-of-use assets	13,414	29,158
Intangible asset, net	45,053	72,084
Goodwill	59,044	59,044
Other long-term assets	3,862	5,372
Total assets	234,998	356,054
Current liabilities:
Accounts payable	9,038	18,021
Accrued expenses and other current liabilities	62,664	75,777
Short-term deferred revenue	0	3,738
Current portion of long-term debt	8,000	32,000
Total current liabilities	79,702	129,536
Deferred revenue, net of current portion	43,296	43,296
Long-term operating lease liabilities	10,227	28,961
Embedded debt derivative	760	760
Long-term debt, net	34,613	34,078
Liability related to sale of future royalties	56,061	57,484
Refund liability to customer	40,346	40,992
Other long-term liabilities	9,415	15,717
Total liabilities	274,420	350,824
Commitments and contingencies (Note 12)
Stockholders' (deficit) equity:
Preferred stock $0.00001 par value, 25,000,000 shares authorized; no shares issued and    outstanding at September 30, 2023 and December 31, 2022	0	0
Common stock $0.00001 par value; 350,000,000 shares authorized at September 30, 2023 and December 31, 2022; 188,313,807 and 184,135,714 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	2	2
Additional paid-in capital	1,570,134	1,562,247
Accumulated other comprehensive income	6	6
Accumulated deficit	(1,609,564)	(1,557,025)
Total stockholders' (deficit) equity	(39,422)	5,230
Total liabilities and stockholders' (deficit) equity	$ 234,998	$ 356,054