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DERIVATIVE AND HEDGING INSTRUMENTS - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivative [Line Items]      
Interest $ 147,106,000 $ 88,440,000 $ 64,873,000
Fair value of derivatives in a net liability position 4,529,000 0  
Credit-Risk-Related Contingent Features      
Derivative [Line Items]      
Fair value of derivatives in a net liability position 2,500,000    
Termination value 2,500,000    
Cash Flow Hedges | Interest Rate Swap      
Derivative [Line Items]      
Hedge ineffectiveness recorded in earnings 0 22,000 $ 800,000
Designated as Hedging Instrument      
Derivative [Line Items]      
Fair value of derivatives in a net liability position 96,229,000 99,588,000  
Designated as Hedging Instrument | Cash Flow Hedges      
Derivative [Line Items]      
Losses included in accumulated other comprehensive loss which are expected to be reclassified into earnings in the next 12 months 8,400,000    
Not Designated as Hedging Instrument | Cross Currency Interest Rate Swaps      
Derivative [Line Items]      
Fair value of derivative asset 67,000    
Other expense $ 34,000 $ 8,000