Annual report pursuant to Section 13 and 15(d)

DERIVATIVES (Summary of the Derivatives) (Details)

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DERIVATIVES (Summary of the Derivatives) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Pay Fixed - Receive Floating Interest Rate Swaps | Not Designated as accounting hedges    
Summary of the derivative designated as a cash flow hedge    
Derivative, amount $ 1,575,149 $ 878,446
Asset 753 10,120
Liabilities 53,592 9,306
Pay Floating - Receive Fixed Interest Rate Swaps | Not Designated as accounting hedges    
Summary of the derivative designated as a cash flow hedge    
Derivative, amount 1,575,149 878,446
Asset 53,592 9,306
Liabilities 753 10,120
Cash Flow Hedging | Designated as accounting hedges    
Summary of the derivative designated as a cash flow hedge    
Derivative, amount 100,000 152,500
Asset 0 0
Liabilities 1,147 4,786
Fair Value Hedging | Designated as accounting hedges    
Summary of the derivative designated as a cash flow hedge    
Derivative, amount 133,078 137,596
Asset 182 1,872
Liabilities $ 6,256 $ 1,684