CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 19,065	$ 30,620
Restricted cash	54	54
Investment in marketable securities	66,885	62,633
Prepaid and other current assets	4,219	2,656
Total Current Assets	90,223	95,963
Non-current Assets:
Operating lease right-of-use assets	180	207
Non-current prepaid expenses and other assets	1,273	1,515
Assets, Noncurrent	1,453	1,722
Total Assets	91,676	97,685
Current Liabilities:
Trade payables	2,795	1,659
Accrued expenses	3,642	4,119
Employee related obligations	376	1,645
Operating lease liabilities	117	115
Total Current Liabilities	6,930	7,538
Long-term Liabilities:
Non-current operating lease liabilities	63	99
Other liabilities	1,313	1,313
Total Long-term Liabilities	1,376	1,412
Total Liabilities	8,306	8,950
Commitments and Contingencies
Stockholders' Equity:
Preferred stock: $0.0001 par value; 20,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	0	0
Common stock: $0.0001 par value; 150,000,000 shares authorized at March 31, 2024 and December 31, 2023; 14,301,688 and 14,098,888 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	1	1
Additional paid-in capital	781,024	780,044
Accumulated other comprehensive (loss) income	(70)	26
Accumulated deficit	(697,585)	(691,336)
Total Stockholders' Equity	83,370	88,735
Total Liabilities and Stockholders’ Equity	$ 91,676	$ 97,685