Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 24,503	$ 59,107
Estimated Fair Value	37,489	11,916
Accounts receivable	3,424	2,838
Prepaid expenses and other current assets	4,804	2,874
Total current assets	70,220	76,735
Operating lease right-of-use assets	1,114	1,191
Property and equipment, net	360	391
Other assets	96	104
Total assets	71,790	78,421
Current liabilities:
Accounts payable	5,692	3,977
Accrued expenses	5,443	7,239
Current portion of deferred revenue	14,767	14,700
Current portion of notes payable	5,714	5,714
Current portion of operating lease liabilities	404	408
Total current liabilities	32,020	32,038
Long-term notes payable	1,841	3,239
Long-term deferred revenue	7,941	10,378
Long-term operating lease liabilities	719	824
Total liabilities	42,521	46,479
Commitments and contingencies
Stockholders' equity:
Common stock, $0.0001 par value; 200,000,000 shares shares authorized as of March 31, 2023 and December 31, 2022; 34,414,149 shares issued and outstanding as of March 31, 2023 and December 31, 2022	3	3
Additional paid-in capital	205,306	204,268
Accumulated other comprehensive income	305	76
Accumulated deficit	(176,345)	(172,405)
Total stockholders' equity	29,269	31,942
Total liabilities and stockholders' equity	$ 71,790	$ 78,421