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SELLING, GENERAL AND ADMINISTRATIVE EXPENSES AND OTHER OPERATING EXPENSES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Selling, General and Administrative Expense [Abstract]    
Compensation and benefits $ 11,353 $ 13,569
Amortization of intangible assets 8,647 7,147
Occupancy related costs 3,908 8,434
Marketing costs 2,932 3,607
Professional services 5,476 3,226
Depreciation and amortization 4,313 2,268
Other 4,611 4,873
Total $ 41,240 $ 43,124