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DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value of Derivative Assets and Liabilities (Details) - Cash flow hedges - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Accrued expenses and other current liabilities    
Derivatives designated as cash flow hedging instruments:    
Liabilities $ 1,205 $ 724
Other liabilities    
Derivatives designated as cash flow hedging instruments:    
Liabilities $ 6,515 $ 3,134