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COMMITMENTS, CONTINGENCIES AND DERIVATIVES (Schedule of customer loan swaps) (Details) $ in Thousands | Sep. 30, 2018 USD ($) derivative | Dec. 31, 2017 USD ($) derivative
--- | --- | ---
Derivative [Line Items] |  |  |
Derivative, Number of Instruments Held | derivative |  | 2 |
Derivative, fair value |  | $ 241 | $ 142
Interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative |  | 43,000 | 43,000
Derivative, fair value | [1] | $ 4,361 | $ 7,571
Interest rate swaps | Federal home loan bank 30-day |  |  |
Derivative [Line Items] |  |  |
Derivative, Number of Instruments Held | derivative |  | 8 | 23
Notional amount of derivative |  | $ 56,720 | $ 124,784
Derivative, fair value |  | 684 | 1,799
Forward-Starting Interest Rate Swap |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative |  | 25,000 | 50,000
Derivative, fair value | [2] | $ 65 | $ 21
Commercial and Industrial Sector [Member] | Interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Derivative, Number of Instruments Held | derivative |  | 75 | 65
Notional amount of derivative |  | $ 396,606 | $ 351,668
Derivative, fair value |  | $ 14,878 | $ 3,237
Loans [Member] | Interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Derivative, Number of Instruments Held | derivative |  | 150 | 130
Notional amount of derivative |  | $ 793,212 | $ 703,336
Derivative, 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 |  | 67 | 42
Notional amount of derivative |  | $ 339,886 | $ 226,884
Derivative, fair value |  | $ (15,562) | $ (5,036)
[1] | Presented within accrued interest and other liabilities on the consolidated statements of condition.
[2] | Presented within accrued interest and other liabilities on the consolidated statements of condition.

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