Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 45,681	$ 95,272
Short-term investments in marketable securities	58,961	91,255
Prepaid expenses and other current assets	6,940	7,227
Total current assets	111,582	193,754
Property and equipment, net	43,277	51,032
Operating lease right-of-use assets	9,979	11,663
Long-term investments in marketable securities		17,703
Other noncurrent assets	5,677	4,793
Total assets	170,515	278,945
Current liabilities:
Accounts payable	5,630	9,578
Accrued and other current liabilities	12,784	10,664
Operating lease liabilities, current	4,319	4,006
Total current liabilities	22,733	24,248
Operating lease liabilities, noncurrent	8,105	11,093
Other noncurrent liabilities	253	228
Total liabilities	31,091	35,569
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, $0.0001 par value; 200,000,000 shares authorized as of December 31, 2023 and 2022; no shares issued and outstanding as of December 31, 2023 and 2022
Common stock, $0.0001 par value; 1,000,000,000 shares authorized as of December 31, 2023 and 2022; 68,330,342 and 66,857,113 shares issued and outstanding as of December 31, 2023 and 2022	7	7
Additional paid-in capital	542,805	522,945
Accumulated other comprehensive loss	(106)	(378)
Accumulated deficit	(403,282)	(279,198)
Total stockholders' equity	139,424	243,376
Total liabilities and stockholders' equity	$ 170,515	$ 278,945