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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) Integer | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Derivative [Line Items] |  |  |
Number of interest rate swaps | Integer | 6 |  |
Interest Rate Cash Flow Hedge Assets at Fair Value | $ 3,485,000 | $ 6,701,000 |
Interest Rate Cash Flow Hedge Liabilities at Fair Value | 678,000 | 0 |
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] | 223,000 |  |
Amount of income (loss) recognized in Other Comprehensive Income (Loss) on derivatives | (1,975,000) | 2,757,000 | $ 1,437,000
Amount of (income) loss reclassified from accumulated other comprehensive income to interest expense | (1,919,000) | (1,404,000) | $ 1,916,000
Interest Rate Swap [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Interest Rate Cash Flow Hedge Liabilities at Fair Value | 678,000 |  |
$75 million interest rate swap executed in 2014 [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | 0 | 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 |
$100 million interest rate swap (2019) [Domain] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 100,000,000 | $ 0 |

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