Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 41,504	$ 50,864
Accounts receivable, net	6,713	6,849
Prepaid expenses and other current assets	6,250	8,139
Total current assets	54,467	65,852
Property and equipment, net	11,175	11,503
Intangible assets, net	9,491	11,273
Goodwill	11,177	11,167
Other assets	1,315	1,457
Total assets	87,625	101,252
Current liabilities
Accounts payable	2,449	2,451
Accrued expenses and other current liabilities	11,547	15,017
Deferred revenue	1,624	2,180
Total current liabilities	15,620	19,648
Deferred tax liability	51	108
Other liabilities	1,593	1,746
Total Liabilities	17,264	21,502
Commitments and contingencies (Note 7)
Stockholders' equity
Common stock, $0.0001 par value. Authorized 100,000 shares; 21,786 issued and 20,131 shares outstanding at March 31, 2017 and 21,407 issued and 19,763 shares outstanding at December 31, 2016	2	2
Additional paid-in capital	513,819	513,139
Treasury stock at cost, 1,655 at March 31, 2017 and 1,644 at December 31, 2016	(35,706)	(35,641)
Accumulated other comprehensive loss	(98)	(112)
Accumulated deficit	(407,656)	(397,638)
Total stockholders' equity	70,361	79,750
Total liabilities and stockholders' equity	$ 87,625	$ 101,252