Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 22,470	$ 21,943
Marketable securities	168,240	182,817
Prepaid expenses and other current assets	1,424	1,628
Total current assets	192,134	206,388
Property and equipment, net	891	989
Other long-term assets	4	3
Operating lease right-of-use assets	5,235	5,467
Total assets	198,264	212,847
Current liabilities:
Accounts payable	3,645	1,811
Accrued expenses	3,849	6,711
Current portion of operating lease liabilities	1,455	1,452
Total current liabilities	8,949	9,974
Operating lease liabilities, net of current portion	4,547	4,807
Total liabilities	13,496	14,781
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.001 par value; authorized shares—10,000,000 at March 31, 2025 and December 31, 2024; no shares issued or outstanding at March 31, 2025 and December 31, 2024.	0	0
Additional paid-in-capital	317,964	315,371
Accumulated deficit	(133,392)	(117,402)
Accumulated other comprehensive income	170	71
Total stockholders' equity	184,768	198,066
Total liabilities and stockholders' equity	198,264	212,847
Common Class A [Member]
Stockholders' equity:
Common stock	19	19
Common Class B [Member]
Stockholders' equity:
Common stock	$ 7	$ 7