Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 25,155	$ 19,696
Marketable securities	19,037	58,032
Trade accounts receivable, net	4,110	3,907
Other current assets	2,550	2,197
Total current assets	50,852	83,832
Marketable securities	8,298	0
Property and equipment, net	2,962	3,272
Intangibles, net	6,614	6,612
Goodwill	1,114	1,114
Other assets	2,112	2,198
Total assets	71,952	97,028
Current liabilities:
Accounts payable and other accrued liabilities	4,236	2,827
Deferred revenue	2,146	3,002
Note payable, current	0	3,947
Total current liabilities	6,382	9,776
Lease liability and other long-term liabilities	2,685	2,295
Note payable, long-term	0	1,118
Total liabilities	9,067	13,189
Commitments and contingencies (Note 14)
Shareholders’ equity:
Preferred stock (par value $0.001 per share, 2,500 authorized, 10 shares issued and outstanding at September 30, 2021 and December 31, 2020)	50	50
Common stock (par value $0.001 per share, 50,000 authorized, 16,933 and 16,735 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively)	17	17
Additional paid-in capital	260,585	255,024
Accumulated deficit	(197,767)	(171,252)
Total shareholders’ equity	62,885	83,839
Total liabilities and shareholders’ equity	$ 71,952	$ 97,028