CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 17,136	$ 28,356
Marketable securities	656,155	696,925
Accounts and other receivables	1,064	700
Prepaid and other current assets	19,402	21,178
Total current assets	693,757	747,159
Property and equipment, net	4,601	4,346
Operating lease right-of-use assets, net	3,514	3,898
Intangible assets	27,190	27,190
Other assets	10,409	9,747
Total assets	739,471	792,340
Current liabilities:
Accounts payable	3,410	3,265
Accrued expenses	25,456	33,842
Current portion of operating lease liabilities	1,499	1,452
Current portion of other long-term liabilities	1,653	942
Total current liabilities	32,018	39,501
Long-term portion of operating lease liabilities	1,929	2,361
Other long-term liabilities	2,543	3,473
Total liabilities	36,490	45,335
Commitments and contingent liabilities
Stockholders' equity:
Convertible preferred stock, $.01 par value; 3,000,000 shares authorized; no shares issued and outstanding at March 31, 2025 and December 31, 2024
Common stock, $.001 par value; 297,000,000 shares authorized; 66,384,191 and 66,374,549 shares issued and outstanding at March 31, 2025 and December 31, 2024, respectively	66	66
Additional paid-in capital	2,308,367	2,298,849
Accumulated other comprehensive income	3,568	3,314
Accumulated deficit	(1,609,020)	(1,555,224)
Total stockholders' equity	702,981	747,005
Total liabilities and stockholders' equity	$ 739,471	$ 792,340