Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 13,789	$ 19,696
Marketable securities	19,537	58,032
Trade accounts receivable, net	6,368	3,907
Loan receivable from related party	2,001
Other current assets	2,316	2,197
Total current assets	44,011	83,832
Marketable securities	8,292
Property and equipment, net	2,875	3,272
Intangibles, net	6,611	6,612
Goodwill	1,114	1,114
Other assets	1,973	2,198
Total assets	64,876	97,028
Current liabilities:
Accounts payable and other accrued liabilities	4,727	2,827
Deferred revenue	2,989	3,002
Note payable, current		3,947
Total current liabilities	7,716	9,776
Lease liability and other long-term liabilities	1,780	2,295
Note payable, long-term		1,118
Total liabilities	9,496	13,189
Commitments and contingencies (Note 15)
Shareholders’ equity:
Preferred stock (par value $0.001 per share, 2,500 authorized, 10 shares issued and outstanding at December 31, 2021 and 2020)	50	50
Common stock (par value $0.001 per share, 50,000 authorized, 16,940 and 16,735 shares issued and outstanding at December 31, 2021 and 2020, respectively)	17	17
Additional paid-in capital	261,324	255,024
Accumulated deficit	(206,011)	(171,252)
Total shareholders’ equity	55,380	83,839
Total liabilities and shareholders’ equity	$ 64,876	$ 97,028