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SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Selling, General and Administrative Expense [Abstract]        
Compensation and benefits $ 12,197 $ 15,541 $ 25,766 $ 28,047
Occupancy related costs 7,189 9,538 15,623 19,811
Amortization of intangible assets 7,544 9,393 14,691 18,539
Marketing costs 3,978 3,697 7,585 7,966
Professional services 4,328 4,367 7,554 8,097
Depreciation and amortization 1,950 2,361 4,218 4,782
Other 5,738 7,573 10,611 12,929
Total $ 42,924 $ 52,470 $ 86,048 $ 100,171