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DERIVATIVES DERIVATIVES - Disclosure by Type of Financial Instrument (Details) - Fair Value Hedges - Matched interest rate swaps - Accrued interest and other liabilities - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | $ 29,189 | $ 12,687
Derivative Liability, Fair Value, Gross Asset | (14,577) | 2,279
Derivative Asset, Fair Value, Amount Not Offset Against Collateral | $ 14,612 | $ 14,966

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