Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 34,382	$ 59,107
Short-term investments	11,924	11,916
Accounts receivable	3,769	2,838
Prepaid expenses and other current assets	3,836	2,874
Total current assets	53,911	76,735
Operating lease right-of-use assets	922	1,191
Property and equipment, net	313	391
Other assets	79	104
Total assets	55,225	78,421
Current liabilities:
Accounts payable	3,635	3,977
Accrued expenses	8,304	7,239
Current portion of deferred revenue	15,832	14,700
Current portion of notes payable		5,714
Current portion of operating lease liabilities	428	408
Total current liabilities	28,199	32,038
Long-term notes payable		3,239
Long-term deferred revenue	2,420	10,378
Long-term operating lease liabilities	498	824
Total liabilities	31,117	46,479
Commitments and contingencies
Stockholders' equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized as of September 30, 2023 and December 31, 2022; 35,119,248 and 34,414,149 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	3	3
Additional paid-in capital	207,045	204,268
Accumulated other comprehensive income	458	76
Accumulated deficit	(183,398)	(172,405)
Total stockholders' equity	24,108	31,942
Total liabilities and stockholders' equity	$ 55,225	$ 78,421