Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Instruments Classification Within Fair Value Hierarchy (Details)

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Instruments Classification Within Fair Value Hierarchy (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Assets      
Derivative Financial Instruments $ 75 $ 0  
Liabilities      
Derivative Financial Instruments 0 $ (70)  
Fair Value, Measurements, Recurring      
Assets      
Derivative Financial Instruments 75   $ 36
Liabilities      
Derivative Financial Instruments 0   (21)
Fair Value, Measurements, Recurring | Level 1      
Assets      
Derivative Financial Instruments 0   0
Liabilities      
Derivative Financial Instruments 0   0
Fair Value, Measurements, Recurring | Level 2      
Assets      
Derivative Financial Instruments 75   36
Liabilities      
Derivative Financial Instruments 0   (21)
Fair value of derivatives, net 75    
Obligation to return cash 75    
Fair Value, Measurements, Recurring | Level 3      
Assets      
Derivative Financial Instruments 0   0
Liabilities      
Derivative Financial Instruments $ 0   $ 0