UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 53,572	$ 90,466
Inventories	20,905	21,568
Accounts receivable, net	19,572	40,284
Prepaid expenses and other current assets	24,398	32,864
Total current assets	118,447	185,182
Property and equipment, net	4,419	5,214
Operating right-of-use assets	14,391	29,158
Intangible asset, net	54,063	72,084
Goodwill	59,044	59,044
Other long-term assets	3,348	5,372
Total assets	253,712	356,054
Current liabilities:
Accounts payable	11,776	18,021
Accrued expenses and other current liabilities	56,408	75,777
Short-term deferred revenue	0	3,738
Current portion of long-term debt	24,000	32,000
Total current liabilities	92,184	129,536
Deferred revenue, net of current portion	43,296	43,296
Long-term operating lease liabilities	11,480	28,961
Embedded debt derivative	760	760
Long-term debt, net	18,486	34,078
Liability related to sale of future royalties	56,548	57,484
Refund liability to customer	40,623	40,992
Other long-term liabilities	17,142	15,717
Total liabilities	280,519	350,824
Commitments and contingencies (Note 13)
Stockholders' (deficit) equity:
Preferred stock $0.00001 par value, 25,000,000 shares authorized; no shares issued and    outstanding at June 30, 2023 and December 31, 2022	0	0
Common stock $0.00001 par value; 350,000,000 shares authorized at June 30, 2023 and December 31, 2022; 188,128,869 and 184,135,714 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	2	2
Additional paid-in capital	1,568,260	1,562,247
Accumulated other comprehensive income	6	6
Accumulated deficit	(1,595,075)	(1,557,025)
Total stockholders' (deficit) equity	(26,807)	5,230
Total liabilities and stockholders' (deficit) equity	$ 253,712	$ 356,054