ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Salaries, commissions and benefits	$ 21,843	$ 23,684
Sales, use, transaction and income taxes	7,438	7,876
Fees for professional services	1,148	1,760
Rent	1,920	1,218
Deferred revenue	1,024	1,722
Other accruals	2,781	4,084
Total accrued expenses and other current liabilities	$ 36,154	$ 40,344