Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
ASSETS    
Securities available for sale, at fair value $ 2,084,928 $ 2,741,816
Loans held for sale 6,608 3,936
Financial Derivatives 123,019 80,310
LIABILITIES    
Financial Derivatives 291,769 236,000
Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 59,568 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 2,025,360 2,685,210
Loans held for sale 6,608 3,936
Financial Derivatives 123,019 80,310
LIABILITIES    
Financial Derivatives 291,769 236,000
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 6,608 3,936
Financial Derivatives 123,019 80,310
LIABILITIES    
Financial Derivatives 291,769 236,000
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 6,608 3,936
Financial Derivatives 123,019 80,310
LIABILITIES    
Financial Derivatives 291,769 236,000
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 61,838 61,943
U.S. government and agency securities | Recurring    
ASSETS    
Securities available for sale, at fair value 61,838 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 59,568 56,606
U.S. government and agency securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 2,270 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 417,460 807,435
Obligations of states and political subdivisions | Recurring    
ASSETS    
Securities available for sale, at fair value 417,460 807,435
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 417,460 807,435
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 242,818 226,380
Corporate and other bonds | Recurring    
ASSETS    
Securities available for sale, at fair value 242,818 226,380
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 242,818 226,380
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 1,361,085 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 1,361,085 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 1,727 1,664
Other securities | Recurring    
ASSETS    
Securities available for sale, at fair value 1,727 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 1,727 1,664
Other securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value $ 0 $ 0