Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 31,040	$ 37,494
Short-term investments	217,149	314,649
Prepaid expenses and other current assets	4,882	8,545
Total current assets	253,071	360,688
Restricted cash	2,743	2,743
Property and equipment, net	79,326	61,908
Operating lease right-of-use assets	39,949	45,749
Other long-term assets	3,796	1,850
Total assets	378,885	472,938
Current liabilities:
Accounts payable	3,665	1,761
Operating lease liabilities, current portion	6,069	4,249
Accrued and other current liabilities	13,596	16,036
Total current liabilities	23,330	22,046
Operating lease liabilities, net of current portion	82,270	78,685
Total liabilities	105,600	100,731
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.0001 par value; 54,350,179 shares authorized; no shares issued and outstanding at December 31, 2023 and 2022
Common stock, $0.0001 par value; 100,000,000 shares authorized; 49,181,295 and 48,877,806 shares issued and outstanding at December 31, 2023 and 2022, respectively	5	5
Additional paid-in capital	708,706	690,814
Accumulated other comprehensive income (loss)	8	(679)
Accumulated deficit	(435,434)	(317,933)
Total stockholders' equity	273,285	372,207
Total liabilities and stockholders' equity	$ 378,885	$ 472,938