Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 25,624	$ 59,107
Short-term investments	22,754	11,916
Accounts receivable	3,743	2,838
Prepaid expenses and other current assets	5,235	2,874
Total current assets	57,356	76,735
Operating lease right-of-use assets	992	1,191
Property and equipment, net	329	391
Other assets	87	104
Total assets	58,764	78,421
Current liabilities:
Accounts payable	3,026	3,977
Accrued expenses	7,537	7,239
Current portion of deferred revenue	14,239	14,700
Current portion of notes payable		5,714
Current portion of operating lease liabilities	416	408
Total current liabilities	25,218	32,038
Long-term notes payable		3,239
Long-term deferred revenue	5,956	10,378
Long-term operating lease liabilities	609	824
Total liabilities	31,783	46,479
Commitments and contingencies
Stockholders' equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized as of June 30, 2023 and December 31, 2022; 34,568,500 and 34,414,149 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	3	3
Additional paid-in capital	206,326	204,268
Accumulated other comprehensive income	340	76
Accumulated deficit	(179,688)	(172,405)
Total stockholders' equity	26,981	31,942
Total liabilities and stockholders' equity	$ 58,764	$ 78,421