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DERIVATIVE INSTRUMENTS - Schedule of Derivatives (Details) - Cash Flow Hedging - Designated as Hedging Instrument | Sep. 30, 2017 USD ($)
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Derivative [Line Items] |
Current Notional Amount | $ 400,000,000
Estimated Fair Value Assets (Liabilities) | 1,295,000
3-month BBA LIBOR | Interest Rate Swap Designated June 22, 2016 Tranche 1 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.062%
Estimated Fair Value Assets (Liabilities) | $ 540,000
3-month BBA LIBOR | Interest Rate Swap Designated June 22, 2016 Tranche 2 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.062%
Estimated Fair Value Assets (Liabilities) | $ 525,000
1-Month USD LIBOR | Interest Rate Swap Designated July 12, 2016 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 0.825%
Estimated Fair Value Assets (Liabilities) | $ 654,000
1-Month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 2 |
Derivative [Line Items] |
Current Notional Amount | $ 100,000,000
Fixed Interest Rate | 1.652%
Estimated Fair Value Assets (Liabilities) | $ 120,000
1-Month USD LIBOR | Interest Rate Swap Designated March 27, 2017 |
Derivative [Line Items] |
Current Notional Amount | $ 100,000,000
Fixed Interest Rate | 1.971%
Estimated Fair Value Assets (Liabilities) | $ (476,000)
3-Month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 1 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.834%
Estimated Fair Value Assets (Liabilities) | $ (68,000)

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