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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)
3 Months Ended 9 Months Ended
Nov. 29, 2017
USD ($)
swap
Aug. 03, 2017
USD ($)
swap
Sep. 30, 2018
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Aug. 13, 2015
USD ($)
swap
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES            
Number of swaps terminated | swap 4 3        
Notional amount of terminated swaps $ 150,000,000 $ 65,000,000        
Payment of derivative fees and accrued interest   38,000        
Termination payments, net of fees 1,011,000          
Amounts reclassified from AOCI, decreased interest expense     $ 320,000 $ 320,000 $ 0  
Change in fair value of interest rate swaps     $ 70,000 $ 70,000 $ 0  
Unsecured Term Loan Facility Entered Into May 2015            
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES            
Repayments of debt $ 150,000,000 $ 65,000,000        
Interest Rate Swap            
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES            
Number of interest rate swaps | swap           10
Total notional amount           $ 385,000,000