DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) Integer	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Document Fiscal Year Focus	2017
Interest Rate Cash Flow Hedge Assets at Fair Value	$ 6,034,000	$ 4,546,000
Interest Rate Cash Flow Hedge Liabilities at Fair Value	$ 695,000	2,578,000
Number of interest rate swaps | Integer	7
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Cash flow hedge amount to be reclassified to Interest Expense in next 12 months [Line Items]	$ 617,000
Amount of income (loss) recognized in Other Comprehensive Income (Loss) on derivative	1,437,000	1,410,000	$ (5,374,000)
Amount of loss reclassified from accumulated other comprehensive income (loss) to interest expense	1,916,000	4,041,000	$ 4,275,000
Interest Rate Swap [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Interest Rate Cash Flow Hedge Liabilities at Fair Value	695,000
Interest rate swap cash flow hedge termination value	717,000
Interest Rate Swap [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Interest Rate Cash Flow Hedge Assets at Fair Value	6,034,000
Interest rate swap cash flow hedge termination value	6,084,000
$80 million interest rate swap [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	80,000,000	80,000,000
$75 million interest rate swap executed in 2014 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	75,000,000	75,000,000
$75 million interest rate swap executed in 2015 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	75,000,000	75,000,000
$65 million interest rate swap executed in 2016 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	65,000,000	65,000,000
$60 million interest rate swap [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	60,000,000	60,000,000
$40 million interest rate swap (2016) [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	40,000,000	40,000,000
$15 million interest rate swap [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 15,000,000	$ 15,000,000