CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 90,769	$ 281,263
Marketable securities	189,479	49,787
Accounts and other receivables, net	1,375	805
Prepaid expenses and other current assets	9,636	9,039
Inventory	3,672	3,906
Total current assets	294,931	344,800
Property and equipment, net	6,899	5,251
Operating lease right-of-use assets	22,269	4,983
Restricted cash	150	150
Total assets	324,249	355,184
Current liabilities:
Accounts payable	14,296	6,504
Accrued expenses	13,341	17,521
Deferred revenue	33,335	38,592
Other current liabilities	1,130	646
Total current liabilities	62,102	63,263
Deferred revenue - noncurrent	11,678	20,692
Operating lease liabilities - noncurrent	22,164	4,906
Total liabilities	95,944	88,861
Contingencies (Note 12)
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.001 par value, 300,000,000 shares authorized at June 30, 2024 and December 31, 2023; 52,160,305 and 49,043,074 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	52	49
Additional paid-in capital	1,029,717	1,007,556
Accumulated deficit	(802,256)	(742,146)
Accumulated other comprehensive income	792	864
Total stockholders' equity	228,305	266,323
Total liabilities and stockholders' equity	$ 324,249	$ 355,184