CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 30,709	$ 56,845
Restricted cash	536	364
Marketable securities	282,818	115,901
Interest and other receivables	14,754	3,144
Prepaid and other current assets	6,268	3,992
Total current assets	335,085	180,246
Noncurrent marketable securities	67,821
Property and equipment, net	1,231	793
Operating leases, right-of-use assets	3,683	4,147
Deposits and other assets	5,197	5,389
Total assets	413,017	190,575
Current liabilities:
Accounts payable	13,684	10,190
Accrued compensation and benefits	10,837	11,534
Operating lease liabilities	943	925
Debt	22,060	20,945
Accrued liabilities	41,862	33,100
Total current liabilities	89,386	76,694
Noncurrent operating lease liabilities	3,179	3,671
Noncurrent debt	29,838	30,212
Commitments and contingencies
Stockholders' equity:
Common stock	542	390
Additional paid-in capital	1,836,818	1,493,469
Accumulated deficit	(1,545,796)	(1,413,642)
Accumulated other comprehensive loss	(950)	(219)
Total stockholders' equity	290,614	79,998
Total liabilities and stockholders' equity	$ 413,017	$ 190,575