Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 11,790	$ 31,081
Accounts receivable, net	11,854	12,627
Prepaid expenses and other current assets	3,087	3,932
Total current assets	26,731	47,640
Property and equipment, net	13,545	13,126
Operating lease right-of-use assets	7,713
Intangible assets, net	13,308	13,933
Goodwill	19,406	19,435
Other assets	1,045	988
Total assets	81,748	95,122
Current liabilities
Accounts payable	3,633	1,519
Accrued expenses and other current liabilities	17,389	22,149
Deferred revenue	2,709	2,115
Total current liabilities	23,731	25,783
Deferred tax liability	106	86
Operating lease liabilities	7,249
Other liabilities	284	2,566
Total liabilities	31,370	28,435
Commitments and contingencies (Note 8)
Stockholders' equity
Common stock, $0.0001 par value. Authorized 100,000 shares; 27,805 and 26,150 shares issued and outstanding at September 30, 2019 and 27,138 and 25,483 shares issued and outstanding at December 31, 2018	3	3
Additional paid-in capital	559,664	554,403
Treasury stock at cost, 1,655 shares at September 30, 2019 and December 31, 2018	(35,706)	(35,706)
Accumulated other comprehensive loss	(89)	(52)
Accumulated deficit	(473,494)	(451,961)
Total stockholders' equity	50,378	66,687
Total liabilities and stockholders' equity	$ 81,748	$ 95,122