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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
Integer
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Derivative [Line Items]      
Number of interest rate swaps | Integer 6    
Interest Rate Cash Flow Hedge Assets at Fair Value $ 4,497,000   $ 6,701,000
Interest rate cash flow hedge liabilities at fair value 109,000   0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]      
Derivative [Line Items]      
Amount of Income (Loss) Recognized in Other Comprehensive Income on Derivatives (1,644,000) $ 3,662,000  
Amount of (income) loss reclassified from accumulated other comprehensive income into interest expense (669,000) $ (56,000)  
Cash flow hedge amount to be reclassified to Interest Expense in next 12 months [Line Items] 1,981,000    
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]      
Derivative [Line Items]      
Interest Rate Cash Flow Hedge Assets at Fair Value 4,497,000   6,701,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]      
Derivative [Line Items]      
Interest rate cash flow hedge liabilities at fair value 109,000   0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $75 million interest rate swap executed in 2014 [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives 75,000,000   75,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $75 million interest rate swap executed in 2015 [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives 75,000,000   75,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $65 million interest rate swap executed in 2016 [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives 65,000,000   65,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $60 million interest rate swap [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives 60,000,000   60,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $40 million interest rate swap (2016) [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives 40,000,000   40,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $15 million interest rate swap [Member]      
Derivative [Line Items]      
Notional Amount of Interest Rate Derivatives $ 15,000,000   $ 15,000,000