Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 42,408	$ 36,640
Marketable securities, available-for-sale	62	7,762
Restricted Cash	50	0
Prepaid expenses and other current assets	710	851
Total current assets	43,230	45,253
Total assets	43,230	45,253
Current liabilities:
Accounts payable	1,135	3,435
Accrued liabilities	4,431	2,687
Total current liabilities	5,566	6,122
Total liabilities	5,566	6,122
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.01 par value; 10,000,000 shares authorized, no shares issued and outstanding as of September 30, 2023 and December 31, 2022	0	0
ommon stock, $0.01 par value; 20,000,000 shares authorized, 3,116,729 and 4,025,489 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	31	40
Additional paid-in capital	186,877	172,575
Accumulated other comprehensive loss	(1)	(57)
Accumulated deficit	(149,243)	(133,427)
Total stockholders' equity	37,664	39,131
Total liabilities and stockholders' equity	$ 43,230	$ 45,253