Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 75,150	$ 54,097
Restricted cash	305	305
Short-term investments		82,034
Accounts receivable	300	41
Prepaid expenses and other current assets	2,275	4,565
Total current assets	78,030	141,042
Property and equipment, net	680	919
Operating lease right-of-use asset	1,577	2,596
Prepaid expenses and other long-term assets	96
Total assets	80,383	144,557
Current liabilities:
Accounts payable	1,285	2,681
Accrued expenses and other current liabilities	3,326	5,616
Deferred revenue	100	106
Operating lease liability	756	826
Note payable, short term	7,500	4,375
Total current liabilities	12,967	13,604
Note payable, long term	3,445	10,442
Operating lease liability, net of current portion	1,730	2,485
Corporate bond, net of bond discount	2,054	1,834
Earn-out liabilities	1,632	5,513
Other long-term liabilities	23
Total liabilities	21,851	33,878
Commitments and contingencies
Stockholders' equity
Common stock, $0.0001 par value: 1,000,000,000 shares authorized; 78,356,527 and 78,022,924 shares issued and outstanding at December 31, 2023 and 2022, respectively	8	8
Additional paid-in capital	358,305	350,980
Accumulated deficit	(299,781)	(240,288)
Accumulated other comprehensive loss		(21)
Total stockholders' equity	58,532	110,679
Total liabilities and stockholders' equity	$ 80,383	$ 144,557