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DERIVATIVE INSTRUMENTS (Schedule of Interest Rate Swap Derivatives) (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Current Notional Amount	$ 1,325,000,000	$ 1,475,000,000
Estimated Fair Value	(45,145,000)	619,000
3-month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 1
Derivative [Line Items]
Current Notional Amount	$ 50,000,000	$ 50,000,000
Fixed Interest Rate	1.834%	1.834%
Estimated Fair Value	$ (2,000)	$ 619,000
3-month USD 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		$ 410,000
3-month USD 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		$ 415,000
1-month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 2
Derivative [Line Items]
Current Notional Amount	$ 100,000,000	$ 100,000,000
Fixed Interest Rate	1.652%	1.652%
Estimated Fair Value	$ 12,000	$ 1,287,000
1-month USD LIBOR | Interest Rate Swap Designated March 27, 2017
Derivative [Line Items]
Current Notional Amount	$ 100,000,000	$ 100,000,000
Fixed Interest Rate	1.971%	1.971%
Estimated Fair Value	$ (581,000)	$ 1,246,000
1-month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 1
Derivative [Line Items]
Current Notional Amount	$ 150,000,000	$ 150,000,000
Fixed Interest Rate	2.201%	2.201%
Estimated Fair Value	$ (2,880,000)	$ 1,491,000
1-month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 2
Derivative [Line Items]
Current Notional Amount	$ 150,000,000	$ 150,000,000
Fixed Interest Rate	2.201%	2.201%
Estimated Fair Value	$ (2,880,000)	$ 1,460,000
1-month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 3
Derivative [Line Items]
Current Notional Amount	$ 100,000,000	$ 100,000,000
Fixed Interest Rate	2.423%	2.423%
Estimated Fair Value	$ (3,517,000)	$ 418,000
1-month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 4
Derivative [Line Items]
Current Notional Amount	$ 50,000,000	$ 50,000,000
Fixed Interest Rate	2.423%	2.423%
Estimated Fair Value	$ (1,778,000)	$ 162,000
1-month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 5
Derivative [Line Items]
Current Notional Amount	$ 200,000,000	$ 200,000,000
Fixed Interest Rate	2.313%	2.313%
Estimated Fair Value	$ (6,595,000)	$ 2,076,000
1-month USD LIBOR | Interest Rate Swap Designated October 10, 2018 Tranche 1
Derivative [Line Items]
Current Notional Amount	$ 75,000,000	$ 75,000,000
Fixed Interest Rate	3.22%	3.22%
Estimated Fair Value	$ (5,750,000)	$ (2,594,000)
1-month USD LIBOR | Interest Rate Swap Designated October 10, 2018 Tranche 2
Derivative [Line Items]
Current Notional Amount	$ 75,000,000	$ 75,000,000
Fixed Interest Rate	3.199%	3.199%
Estimated Fair Value	$ (5,747,000)	$ (2,551,000)
1-month USD LIBOR | Interest Rate Swap Designated October 10, 2018 Tranche 3
Derivative [Line Items]
Current Notional Amount	$ 75,000,000	$ 75,000,000
Fixed Interest Rate	3.209%	3.209%
Estimated Fair Value	$ (5,807,000)	$ (2,568,000)
1-month USD LIBOR | Interest Rate Swap Designated December 18, 2018 Tranche 1
Derivative [Line Items]
Current Notional Amount	$ 100,000,000	$ 100,000,000
Fixed Interest Rate	2.885%	2.885%
Estimated Fair Value	$ (4,930,000)	$ (797,000)
1-month USD LIBOR | Interest Rate Swap Designated December 18, 2018 Tranche 2
Derivative [Line Items]
Current Notional Amount	$ 100,000,000	$ 100,000,000
Fixed Interest Rate	2.867%	2.867%
Estimated Fair Value	$ (4,691,000)	$ (873,000)
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		$ 418,000

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