CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 34,258	$ 12,957
Accounts receivable, net of allowance for doubtful accounts of $28 and $38 as of December 31, 2021 and 2020, respectively	3,736	3,201
Prepaid expenses and other current assets	599	581
Total current assets	38,593	16,739
Property and equipment, net	577	558
Intangible assets, net	28,181	27,170
Goodwill	5,227	5,227
Right-of-use assets	1,661	2,161
Other noncurrent assets	137	139
Total assets	74,376	51,994
Current liabilities:
Accounts payable	1,605	2,075
Accrued expenses and other current liabilities	395	1,458
Current portion of operating lease liabilities	617	552
Current portion of long-term loan	0	449
Deferred revenue	841	504
Total current liabilities	3,458	5,038
Noncurrent operating lease liabilities	1,291	1,908
Long-term loan	0	1,703
Deferred tax liabilities	198
Total liabilities	4,947	8,649
Shareholders' equity:
Preferred stock-$0.001 par value, 10,000,000 shares authorized, and 0 shares issued and outstanding, as of December 31, 2021 and 2020
Common stock-$0.001 par value, 200,000,000 shares authorized, 13,488,540 and 12,167,327 shares issued and outstanding, as of December 31, 2021 and 2020	13	13
Additional paid-in capital	91,434	66,005
Accumulated deficit	(22,018)	(22,673)
Total shareholders' equity	69,429	43,345
Total liabilities and shareholders' equity	$ 74,376	$ 51,994