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DERIVATIVES (Summary of the Derivatives) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Interest Rate Lock Commitments | Not Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | $ 0 | $ 34,314
Asset | 0 | 559
Liabilities | 0 | 0
Best Efforts Forward Delivery Commitments | Not Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | 0 | 73,777
Asset | 0 | 12
Liabilities | 0 | 0
Pay Fixed - Receive Floating Interest Rate Swaps | Not Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | 878,446 | 529,736
Asset | 10,120 | 0
Liabilities | 9,306 | 1,350
Pay Floating - Receive Fixed Interest Rate Swaps | Not Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | 878,446 | 529,736
Asset | 9,306 | 1,350
Liabilities | 10,120 | 0
Cash Flow Hedges | Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | 152,500 | 152,500
Asset | 0 | 49
Liabilities | 4,786 | 8,005
Fair Value Hedges | Designated as accounting hedges |  |
Summary of the derivative designated as a cash flow hedge |  |
Derivative, amount | 137,596 | 80,973
Asset | 1,872 | 1,598
Liabilities | $ 1,684 | $ 76

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- Definition 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 -Sentence Column B + Details
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