ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Salaries, commissions and benefits	$ 23,684	$ 34,390
Sales, use and income taxes	6,096	8,492
Fees for professional services	1,760	1,912
Rent	1,218	1,519
Deferred revenue	1,722	1,167
Other accruals	5,864	6,585
Total accrued expenses and other liabilities	$ 40,344	$ 54,065