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COMMITMENTS, CONTINGENCIES AND DERIVATIVES (Schedule of customer loan swaps) (Details) $ in Thousands	Sep. 30, 2019 USD ($) derivative	Dec. 31, 2018 USD ($) derivative
Interest rate swaps
Derivative [Line Items]
Notional amount of derivative	$ 43,000	$ 43,000
Fair Value	$ (9,602)	$ (5,682)
Interest rate swaps | Federal home loan bank 30-day
Derivative [Line Items]
Derivative, Number of Instruments Held | derivative	84	25
Notional amount of derivative	$ 414,997	$ 118,891
Fair Value	24,260	3,467
Forward-Starting Interest Rate Swap
Derivative [Line Items]
Notional amount of derivative	$ 0	$ 25,000
Commercial and Industrial Sector [Member] | Interest rate swaps
Derivative [Line Items]
Derivative, Number of Instruments Held | derivative	85	82
Notional amount of derivative	$ 416,143	$ 416,515
Fair Value	$ (24,258)	$ 4,374
Loans [Member] | Interest rate swaps
Derivative [Line Items]
Derivative, Number of Instruments Held | derivative	170	164
Notional amount of derivative	$ 832,286	$ 833,030
Fair Value	$ 0	$ 0
Other Liabilities [Member] | Interest rate swaps | Federal home loan bank 30-day
Derivative [Line Items]
Derivative, Number of Instruments Held | derivative	1	57
Notional amount of derivative	$ 1,146	$ 297,624
Fair Value	$ (2)	$ (7,841)

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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