Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 89,247	$ 25,754
Accounts receivable, net of allowance for doubtful accounts and other adjustments of $5 and $10 (2021 and 2020, respectively)	8,333	12,347
Prepaid expenses and other current assets	908	1,189
Total current assets	98,488	39,290
Equipment and improvements, net	2,161	2,170
Right-of-use assets	5,690	5,785
Other assets	679	694
Intangible assets, net	10,400	12,698
Goodwill	12,266	12,266
Total assets	129,684	72,903
Current liabilities:
Accounts payable	2,640	2,282
Accrued payroll and benefits	3,150	2,867
Current operating lease liabilities	1,427	1,433
Other accrued liabilities	188	216
Deferred revenue	1,027	1,572
Total current liabilities	8,432	8,370
Non-current liabilities:
Operating lease liabilities	4,627	4,805
Deferred rent	845	887
Deferred tax liabilities, net	59	59
Other long term liabilities	66	66
Total non-current liabilities	5,597	5,817
Commitments and contingencies
Stockholders' equity:
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 51,645,718 and 41,232,804 shares issued and outstanding (2021 and 2020, respectively)	52	41
Additional paid-in capital	340,058	279,905
Accumulated comprehensive deficit	(224,455)	(221,230)
Total stockholders’ equity	115,655	58,716
Total liabilities and stockholders' equity	$ 129,684	$ 72,903