Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)

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FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
ASSETS    
Securities available for sale, at fair value $ 2,231,261 $ 2,741,816
Loans held for sale 6,710 3,936
Financial Derivatives 93,027 80,310
LIABILITIES    
Financial Derivatives 206,561 236,000
Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 61,311 56,606
Loans held for sale 0 0
Financial Derivatives 0 0
LIABILITIES    
Financial Derivatives 0 0
Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 2,169,950 2,685,210
Loans held for sale 6,710 3,936
Financial Derivatives 93,027 80,310
LIABILITIES    
Financial Derivatives 206,561 236,000
Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Loans held for sale 0 0
Financial Derivatives 0 0
LIABILITIES    
Financial Derivatives 0 0
Recurring    
ASSETS    
Loans held for sale 6,710 3,936
Financial Derivatives 93,027 80,310
LIABILITIES    
Financial Derivatives 206,561 236,000
Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Loans held for sale 0 0
Financial Derivatives 0 0
LIABILITIES    
Financial Derivatives 0 0
Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Loans held for sale 6,710 3,936
Financial Derivatives 93,027 80,310
LIABILITIES    
Financial Derivatives 206,561 236,000
Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Loans held for sale 0 0
Financial Derivatives 0 0
LIABILITIES    
Financial Derivatives 0 0
U.S. government and agency securities    
ASSETS    
Securities available for sale, at fair value 63,356 61,943
U.S. government and agency securities | Recurring    
ASSETS    
Securities available for sale, at fair value 63,356 61,943
U.S. government and agency securities | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 61,311 56,606
U.S. government and agency securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 2,045 5,337
U.S. government and agency securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Obligations of states and political subdivisions    
ASSETS    
Securities available for sale, at fair value 475,447 807,435
Obligations of states and political subdivisions | Recurring    
ASSETS    
Securities available for sale, at fair value 475,447 807,435
Obligations of states and political subdivisions | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Obligations of states and political subdivisions | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 475,447 807,435
Obligations of states and political subdivisions | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Corporate and other bonds    
ASSETS    
Securities available for sale, at fair value 241,889 226,380
Corporate and other bonds | Recurring    
ASSETS    
Securities available for sale, at fair value 241,889 226,380
Corporate and other bonds | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Corporate and other bonds | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 241,889 226,380
Corporate and other bonds | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Mortgage-backed securities | Recurring    
ASSETS    
Securities available for sale, at fair value 1,448,817 1,644,394
Mortgage-backed securities | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Mortgage-backed securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 1,448,817 1,644,394
Mortgage-backed securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Other securities    
ASSETS    
Securities available for sale, at fair value 1,752 1,664
Other securities | Recurring    
ASSETS    
Securities available for sale, at fair value 1,752 1,664
Other securities | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Other securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 1,752 1,664
Other securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value $ 0 $ 0