CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 54,361	$ 50,889
Cash held as collateral	1,451	3,962
Accounts receivable, net of allowance for doubtful accounts of $1,299 and $1,732 as of September 30, 2017 and December 31, 2016, respectively	32,180	31,823
Prepaid expenses and other current assets	7,734	5,477
Total current assets	95,726	92,151
Property and equipment, net	32,183	28,397
Intangibles, net	12,974	16,510
Goodwill	80,499	80,245
Deferred tax assets	699	773
Other assets	1,487	1,562
Total assets	223,568	219,638
CURRENT LIABILITIES:
Accounts payable	3,443	7,288
Accrued expenses and other current liabilities	37,207	40,250
Deferred revenue	35,694	27,145
Total current liabilities	76,344	74,683
Other liabilities	2,745	3,147
Deferred tax liability	4,082	3,332
Total liabilities	83,171	81,162
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Common stock	59	58
Additional paid-in capital	301,614	289,524
Treasury stock	(3)	(2)
Accumulated deficit	(159,414)	(144,944)
Accumulated other comprehensive loss	(1,859)	(6,160)
Total stockholders’ equity	140,397	138,476
Total liabilities and stockholders’ equity	$ 223,568	$ 219,638