Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 7,393	$ 5,032
Restricted cash - current	4,681	4,477
Receivables, net	695	973
Unbilled receivables	236	453
Deferred costs - current	160	156
Prepaid expenses and other current assets	2,288	3,168
Total current assets	15,453	14,259
Long-term assets:
Property and equipment, net	2,241	2,498
Restricted cash - long-term	0	204
Goodwill	5,713	5,713
Intangible assets, net	820	1,125
Other assets	381	1,326
Operating lease right-of-use assets	238	632
Total assets	24,846	25,757
Current liabilities:
Accounts payable	1,706	1,927
Accrued compensation and benefits	2,106	1,987
Deferred revenue	309	326
Current portion of operating lease liabilities	60	653
Other accrued liabilities	4,032	4,576
Total current liabilities	8,213	9,469
Long-term liabilities:
Long-term debt, net	9,804	10,065
Long-term operating lease liabilities	209	546
Total liabilities	18,226	20,080
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value; 50,000,000 shares authorized; 3,770,265 shares issued and outstanding at each of March 31, 2023 and December 31, 2022	0	0
Common stock, $0.0001 par value; 500,000,000 shares authorized; 29,320,248 and 27,167,479 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	3	3
Additional paid-in capital	457,708	448,415
Accumulated deficit	(451,091)	(442,741)
Total stockholders' equity	6,620	5,677
Total liabilities and stockholders' equity	$ 24,846	$ 25,757