COMMITMENTS, CONTINGENCIES AND DERIVATIVES (Schedule of Swapped Variable Cost for Fixed Cost and Terms of Interest Rate Swap Agreements) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Interest rate swaps
Derivative [Line Items]
Notional Amount	$ 43,000,000		$ 43,000,000		$ 43,000,000
Fair Value	(8,306,000)		(8,306,000)		(5,682,000)
Loss on Cash Flow Hedge Ineffectiveness	0	$ 0	0	$ 0
Interest rate swaps | Contract, One
Derivative [Line Items]
Notional Amount	$ 10,000,000		$ 10,000,000		10,000,000
Trade Date			Mar. 18, 2009
Maturity Date			Jun. 30, 2021
Variable Index Received			3 months
Fixed Rate Paid	5.09%		5.09%
Fair Value	$ (383,000)		$ (383,000)		(272,000)
Interest rate swaps | Contract, Two
Derivative [Line Items]
Notional Amount	$ 10,000,000		$ 10,000,000		10,000,000
Trade Date			Jul. 08, 2009
Maturity Date			Jun. 30, 2029
Variable Index Received			3 months
Fixed Rate Paid	5.84%		5.84%
Fair Value	$ (2,353,000)		$ (2,353,000)		(1,655,000)
Interest rate swaps | Contract, Three
Derivative [Line Items]
Notional Amount	$ 10,000,000		$ 10,000,000		10,000,000
Trade Date			May 06, 2010
Maturity Date			Jun. 30, 2030
Variable Index Received			3 months
Fixed Rate Paid	5.71%		5.71%
Fair Value	$ (2,396,000)		$ (2,396,000)		(1,636,000)
Interest rate swaps | Contract, Four
Derivative [Line Items]
Notional Amount	$ 5,000,000		$ 5,000,000		5,000,000
Trade Date			Mar. 14, 2011
Maturity Date			Mar. 30, 2031
Variable Index Received			3 months
Fixed Rate Paid	4.35%		4.35%
Fair Value	$ (1,279,000)		$ (1,279,000)		(877,000)
Interest rate swaps | Contract, Five
Derivative [Line Items]
Notional Amount	$ 8,000,000		$ 8,000,000		8,000,000
Trade Date			May 04, 2011
Maturity Date			Jul. 07, 2031
Variable Index Received			3 months
Fixed Rate Paid	4.14%		4.14%
Fair Value	$ (1,895,000)		$ (1,895,000)		(1,242,000)
Forward-Starting Interest Rate Swap
Derivative [Line Items]
Notional Amount	0		$ 0		25,000,000
Forward-Starting Interest Rate Swap | Contract, One
Derivative [Line Items]
Variable Index Received			1 month
Forward-Starting Interest Rate Swap | Contract, Two
Derivative [Line Items]
Notional Amount	$ 0		$ 0		25,000,000
Trade Date			Feb. 25, 2015
Maturity Date			Feb. 25, 2019
Variable Index Received			1 month
Fixed Rate Paid	1.74%		1.74%
Fair Value	$ 0		$ 0		30,000
Interest Rate Swap On Loans [Member]
Derivative [Line Items]
Notional Amount	$ 100,000,000		$ 100,000,000		$ 0
Trade Date			Jun. 12, 2019
Maturity Date			Jun. 10, 2024
Fixed Rate Paid	1.693%		1.693%
Fair Value	$ 262,000		$ 262,000
Loss on Cash Flow Hedge Ineffectiveness	$ 0		$ 0