CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 11,891	$ 13,011
Marketable securities	40,398	52,746
Prepaid expenses	1,513	1,168
Other current assets	142	325
Total current assets	53,944	67,250
Right of use assets - operating leases, net	3,573	4,330
Right of use assets - financing leases, net	1,157	1,543
Property and equipment, net	1,038	1,165
Other non-current assets	87	86
Total assets	59,799	74,374
Current liabilities:
Accounts payable and accrued liabilities	1,646	1,694
Compensation and employee benefits liabilities	848	1,510
Operating lease liabilities, current	1,591	1,567
Financing lease liabilities, current	864	872
Total current liabilities	4,949	5,643
Operating lease liabilities, non-current	2,214	3,001
Financing lease liabilities, non-current	377	768
Other non-current liabilities	67	67
Total liabilities	7,607	9,479
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.0001 par value and 10,000,000 shares authorized as of June 30, 2024 and December 31, 2023; zero shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively
Common stock, $0.0001 par value and 250,000,000 shares authorized as of June 30, 2024 and December 31, 2023; 25,124,333 and 25,030,188 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	3	3
Additional paid-in capital	299,311	296,996
Accumulated deficit	(247,029)	(231,895)
Accumulated other comprehensive loss	(93)	(209)
Total stockholders' equity	52,192	64,895
Total liabilities and stockholders' equity	$ 59,799	$ 74,374