Condensed Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 18,098,000	$ 8,232,000
Restricted cash	1,388,000
Accounts receivable	0	0
Other receivables	237,000	368,000
Contract costs	1,967,000	1,973,000
Prepaid asset	2,700,000	2,182,000
Total current assets	24,390,000	12,755,000
Property and equipment, net	1,357,000	1,258,000
Intangible assets, net	22,000	27,000
Restricted cash, non-current	500,000	500,000
Contract costs, non-current	96,000	90,000
Equity Method Investments	0
Other assets	431,000	487,000
Total assets	26,796,000	15,117,000
Current liabilities:
Accounts payable	5,240,000	1,886,000
Accrued liabilities	6,464,000	1,330,000
Deferred revenue	20,838,000	18,748,000
Note payable	696,000	439,000
Other liabilities	110,000	37,000
Total current liabilities	33,348,000	22,440,000
Deferred revenue, non-current	913,000	854,000
Note payable, non-current	5,282,000	276,000
Other liabilities	363,000	228,000
Total liabilities	39,906,000	23,798,000
Commitments and contingencies (Note 13)
Stockholders' equity (deficit):
Preferred stock (par value $0.0001; 60,000,000 shares authorized; zero shares issued and outstanding as of December 31, 2021 and 2020, respectively)
Common stock (par value $0.0001; 100,000,000 shares authorized; shares issued and outstanding: 17,701,592 and 10,065,727 as of December 31, 2021 and 2020, respectively)	2,000	1,000
Additional paid-in capital	152,183,000	114,420,000
Accumulated deficit	(165,295,000)	(123,102,000)
Total stockholders' deficit	(13,110,000)	(8,681,000)
Total liabilities and stockholders' deficit	$ 26,796,000	$ 15,117,000