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SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Selling, General and Administrative Expense [Abstract]        
Compensation and benefits $ 15,068 $ 14,145 $ 43,115 $ 42,460
Occupancy related costs 8,536 8,903 28,347 26,785
Amortization of intangible assets 8,604 11,465 27,143 36,432
Professional services 3,886 4,097 11,983 17,533
Marketing costs 3,992 9,275 11,958 21,438
Depreciation and amortization 2,286 2,557 7,068 7,514
Other 4,250 3,444 17,179 9,547
Total $ 46,622 $ 53,886 $ 146,793 $ 161,709