Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 16,078	$ 25,754
Accounts receivable, net of allowance for doubtful accounts of $2 and $10 at December 31, 2021 and 2020, respectively	10,590	12,347
Prepaid expenses and other current assets	1,988	1,189
Total current assets	28,656	39,290
Equipment and improvements, net	2,698	2,170
Right-of-use assets	5,710	5,785
Other assets	620	694
Intangible assets, net	42,631	12,698
Goodwill	35,041	12,266
Total assets	115,356	72,903
Current liabilities:
Accounts payable	3,301	2,282
Accrued payroll and benefits	4,055	2,867
Current operating lease liabilities	1,400	1,433
Other accrued liabilities	436	216
Deferred revenue	176	1,572
Total current liabilities	9,368	8,370
Non-current liabilities:
Operating lease liabilities	4,467	4,805
Deferred rent and other long-term liabilities	844	953
Deferred tax liability, net	117	59
Total non-current liabilities	5,428	5,817
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 54,259,390 and 41,232,804 shares issued and outstanding at December 31, 2021 and 2020, respectively	54	41
Additional paid-in capital	352,779	279,905
Accumulated comprehensive deficit	(252,273)	(221,230)
Total stockholders’ equity	100,560	58,716
Total liabilities and stockholders' equity	$ 115,356	$ 72,903