Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 35	$ 4,876
Restricted cash		183
Accounts receivable	417	1,000
Other receivables	100	240
Contract costs		1,986
Prepaid asset	3,558	3,341
Total current assets	4,110	11,626
Property and equipment, net	511	730
Right-of-use assets, net	1,073	1,417
Intangible assets, net	13	17
Restricted cash, non-current	500	500
Contract costs, non-current		78
Other assets	327	327
Total assets	6,534	14,695
Current liabilities:
Accounts payable	5,410	2,308
Accrued liabilities	7,691	9,564
Lease liabilities	576	538
Contract liabilities	380	20,173
Note payable		519
Note payable (at fair value)	3,410	3,781
Other liabilities	15	15
Total current liabilities	17,482	36,898
Contract liabilities, non-current		737
Lease liabilities, non-current	854	1,292
Total liabilities	18,336	38,927
Stockholders’ deficit:
Preferred stock (par value $0.0001; 60,000,000 shares authorized; zero shares issued and outstanding as of September 30, 2023 and December 31, 2022)
Common stock (par value $0.0001; 100,000,000 shares authorized; 44,574,021 and 27,033,532 shares issued and outstanding as of September 30, 2023 and December 31, 2022)	5	3
Additional paid-in capital	170,827	166,380
Accumulated other comprehensive income	7,787	5,051
Accumulated deficit	(190,421)	(195,666)
Total stockholders’ deficit	(11,802)	(24,232)
Total liabilities and stockholders’ deficit	$ 6,534	$ 14,695