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DERIVATIVE INSTRUMENTS - Schedule of Derivatives (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($) | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivative [Line Items] |  |
Current Notional Amount | $ 1,050,000,000 | $ 1,100,000,000.0
Estimated Fair Value, Assets (Liabilities) | 16,188,000 |
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) | $ 822,000 |
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) | $ 835,000 |
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) | $ 850,000 |
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) | $ 1,621,000 |
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) | $ 1,529,000 |
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 1 |  |
Derivative [Line Items] |  |
Current Notional Amount | $ 150,000,000 |
Fixed Interest Rate | 2.201% |
Estimated Fair Value, Assets (Liabilities) | $ 2,343,000 |
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 2 |  |
Derivative [Line Items] |  |
Current Notional Amount | $ 150,000,000 |
Fixed Interest Rate | 2.201% |
Estimated Fair Value, Assets (Liabilities) | $ 2,284,000 |
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 3 |  |
Derivative [Line Items] |  |
Current Notional Amount | $ 100,000,000 |
Fixed Interest Rate | 2.423% |
Estimated Fair Value, Assets (Liabilities) | $ 1,034,000 |
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 4 |  |
Derivative [Line Items] |  |
Current Notional Amount | $ 50,000,000 |
Fixed Interest Rate | 2.423% |
Estimated Fair Value, Assets (Liabilities) | $ 642,000 |
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 5 |  |
Derivative [Line Items] |  |
Current Notional Amount | $ 200,000,000 |
Fixed Interest Rate | 2.313% |
Estimated Fair Value, Assets (Liabilities) | $ 3,437,000 |
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) | $ 791,000 |

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