CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 46,996	$ 51,775
Marketable securities	22,777	48,983
Accounts receivable, net - related party	1,718	2,765
Inventory, net	2,741	2,821
Income tax receivable	697	697
Other receivables	506	555
Prepaid expenses	5,790	8,154
Restricted cash		408
Total current assets	81,225	116,158
Operating lease right-of-use assets	3,826	4,864
Property and equipment, net	3,548	3,322
Restricted cash, non-current	1,500	1,500
Total assets	90,099	125,844
Current liabilities:
Accounts payable and accrued expenses	14,875	25,592
Operating lease liability, current	220
Total current liabilities	15,095	25,592
Liability related to sales of future royalties and milestones, net	38,376	37,079
Operating lease liability, non-current	6,825	6,088
Total liabilities	60,296	68,759
Commitments and contingencies (Note 17)
Stockholders' equity:
Preferred stock; $0.001 par value; 5,000,000 shares authorized at March 31, 2024 and December 31, 2023, zero shares issued and outstanding at March 31, 2024 and December 31, 2023
Common stock; $0.001 par value; 100,000,000 shares authorized at March 31, 2024 and December 31, 2023, 54,667,079 shares and 54,480,704 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	54	54
Additional paid-in capital	745,381	742,036
Accumulated deficit	(715,441)	(684,745)
Accumulated other comprehensive loss	(191)	(260)
Total stockholders' equity	29,803	57,085
Total liabilities and stockholders' equity	$ 90,099	$ 125,844