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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) Integer | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) Integer | Sep. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Derivative [Line Items] |  |  |  |  |
Number of interest rate swaps | Integer | 6 |  | 6 |  |
Interest Rate Cash Flow Hedge Assets at Fair Value | $ 10,693,000 |  | $ 10,693,000 |  | $ 6,034,000
Interest rate cash flow hedge liabilities at fair value | 0 |  | 0 |  | 695,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Amount of Income (Loss) Recognized in Other Comprehensive Income on Derivatives | 1,002,000 | $ (102,000) | 6,236,000 | $ (996,000) |
Amount of (income) loss reclassified from accumulated other comprehensive income into interest expense | (449,000) | $ 326,000 | (891,000) | $ 1,646,000 |
Cash flow hedge amount to be reclassified to Interest Expense in next 12 months [Line Items] | 2,884,000 |  | 2,884,000 |  |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest Rate Cash Flow Hedge Assets at Fair Value | 10,693,000 |  | 10,693,000 |  | 6,034,000
Interest rate swap cash flow hedge termination value | 10,798,000 |  | 10,798,000 |  |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest rate cash flow hedge liabilities at fair value | 0 |  | 0 |  | 695,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | $80 million interest rate swap [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount of Interest Rate Derivatives | 0 |  | 0 |  | 80,000,000
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 |  | 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 |  | 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 |  | 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 |  | 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 |  | 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 |  | $ 15,000,000

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