Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 19,696	$ 11,213
Marketable securities	58,032	25,604
Trade accounts receivable, net	3,907	4,021
Other current assets	2,197	2,456
Total current assets	83,832	43,294
Property and equipment, net	3,272	3,650
Intangibles, net	6,612	6,670
Goodwill	1,114	1,114
Other assets	2,198	2,660
Total assets	97,028	57,388
Current liabilities:
Accounts payable and other accrued liabilities	2,827	2,272
Note payable, current	3,947
Deferred revenue	3,002	3,172
Total current liabilities	9,776	5,444
Lease liability and other long-term liabilities	2,295	2,494
Note payable, long-term	1,118
Total liabilities	13,189	7,938
Commitments and contingencies (Note 14)
Shareholders’ equity:
Preferred stock (par value $0.001 per share, 2,500 authorized, 10 shares issued and outstanding at December 31, 2020 and 2019)	50	50
Common stock (par value $0.001 per share, 50,000 authorized, 16,735 and 12,446 shares issued and outstanding at December 31, 2020 and 2019, respectively)	17	12
Additional paid-in capital	255,024	188,103
Accumulated deficit	(171,252)	(138,715)
Total shareholders’ equity	83,839	49,450
Total liabilities and shareholders’ equity	$ 97,028	$ 57,388