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SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Selling, General and Administrative Expense [Abstract]    
Compensation and benefits $ 13,569 $ 12,506
Occupancy related costs 8,434 10,273
Amortization of intangible assets 7,147 9,146
Marketing costs 3,607 4,269
Professional services 3,226 3,730
Depreciation and amortization 2,268 2,421
Other 4,873 5,356
Total $ 43,124 $ 47,701