Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 60,927	$ 38,570
Accounts receivable, net	7,201	10,469
Prepaid expenses and other current assets	3,470	4,989
Total current assets	71,598	54,028
Property and equipment, net	11,980	14,568
Intangible assets, net	15,194	21,332
Goodwill	10,358	10,358
Other assets	4,950	1,173
Total assets	114,080	101,459
Current liabilities
Accounts payable	1,838	1,973
Accrued expenses and other current liabilities	12,651	15,169
Deferred revenue	2,456	2,933
Total current liabilities	16,945	20,075
Deferred tax liability		551
Other liabilities	1,683	1,713
Stockholders’ equity
Common stock, $0.0001 par value. Authorized 100,000 shares; 21,240 issued and 20,438 shares outstanding at June 30, 2016 and 20,956 issued and 20,154 shares outstanding at December 31, 2015	2	2
Additional paid-in capital	509,379	505,603
Accumulated other comprehensive loss	(93)	(91)
Treasury stock at cost, 802 at June 30, 2016 and December 31, 2015	(30,767)	(30,767)
Accumulated deficit	(383,069)	(395,627)
Total stockholders’ equity	95,452	79,120
Total liabilities and stockholders’ equity	$ 114,080	$ 101,459