Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 122,825	$ 128,885
Short-term marketable securities	151,094	151,827
Accounts receivable	0	30,000
Prepaid expenses and other current assets	7,888	8,507
Total current assets	281,807	319,219
Property and equipment, net	3,994	3,985
Operating lease right-of-use assets	9,806	10,475
Other assets, noncurrent	588	661
Total assets	296,195	334,340
Current liabilities:
Accounts payable	18,156	13,951
Accrued expenses	32,588	43,184
Deferred revenue	28,769	30,610
Operating lease liabilities	2,904	2,798
Other current liabilities	985	990
Total current liabilities	83,402	91,533
Operating lease liabilities, noncurrent	7,773	8,575
Long-term debt, net	25,004	24,929
Deferred revenue, noncurrent	115,582	117,043
Other liabilities, noncurrent	140	203
Total liabilities	231,901	242,283
Commitments (Note 11)
Stockholders' equity:
Preferred stock, $0.0001 par value; 25,000,000 shares authorized; 0 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	0	0
Common stock, $0.0001 par value; 350,000,000 shares authorized; 109,061,074 and 105,144,864 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	11	11
Additional paid-in capital	775,125	746,889
Accumulated other comprehensive income (loss)	12	(152)
Accumulated deficit	(710,854)	(654,691)
Total stockholders’ equity	64,294	92,057
Total liabilities and stockholders’ equity	$ 296,195	$ 334,340