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DERIVATIVES (Details) $ / shares in Thousands, $ in Thousands | Dec. 31, 2017 USD ($) $ / shares | Dec. 31, 2016 USD ($)
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Designated as Hedging Instrument [Member] |  |
DERIVATIVES |  |
Derivative, Number of Instruments Held | $ / shares | 0 |
Interest rate options |  |
DERIVATIVES |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | $ 2,494 | $ 879
Interest rate options | Interest rate lock commitments | Derivative instruments not designated as hedging instruments. |  |
DERIVATIVES |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability |  | 879
Interest Rate Forwards [Member] |  |
DERIVATIVES |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | $ 18,748 | 32,497
Interest Rate Forwards [Member] | Forward sale commitments | Derivative instruments not designated as hedging instruments. |  |
DERIVATIVES |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability |  | $ 32,497

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