XML 120 R109.htm IDEA: XBRL DOCUMENT v3.25.3
FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities $ 4,598,303 $ 4,565,302
MBS [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 2,840,007 2,663,162
Fair Value, Measurements, Recurring [Member]    
Assets Fair Value Disclosure [Abstract]    
Equity securities 5,009 4,886
Derivative Assets 332 318
Derivative Liabilities [Abstract]    
Derivative Liabilities 264 150
Fair Value, Measurements, Recurring [Member] | U.S. Treasury securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 496,803 59,189
Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies Debt Securities [Member] | Noncallable [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 646,783 533,296
Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies Debt Securities [Member] | Call Option [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 612,631 1,307,035
Fair Value, Measurements, Recurring [Member] | MBS [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 2,840,007 2,663,162
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 1,579 1,620
Fair Value, Measurements, Recurring [Member] | Other Investments [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 500 1,000
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member]    
Assets Fair Value Disclosure [Abstract]    
Equity securities 5,009 4,886
Derivative Assets 0 0
Derivative Liabilities [Abstract]    
Derivative Liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | U.S. Treasury securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 496,803 59,189
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | U.S. Government Agencies Debt Securities [Member] | Noncallable [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | U.S. Government Agencies Debt Securities [Member] | Call Option [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | MBS [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Other Investments [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member]    
Assets Fair Value Disclosure [Abstract]    
Equity securities 0 0
Derivative Assets 332 318
Derivative Liabilities [Abstract]    
Derivative Liabilities 264 150
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | U.S. Treasury securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | U.S. Government Agencies Debt Securities [Member] | Noncallable [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 646,783 533,296
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | U.S. Government Agencies Debt Securities [Member] | Call Option [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 612,631 1,307,035
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | MBS [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 2,836,675 2,658,967
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Other Investments [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member]    
Assets Fair Value Disclosure [Abstract]    
Equity securities 0 0
Derivative Assets 0 0
Derivative Liabilities [Abstract]    
Derivative Liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | U.S. Treasury securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | U.S. Government Agencies Debt Securities [Member] | Noncallable [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | U.S. Government Agencies Debt Securities [Member] | Call Option [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | MBS [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 3,332 4,195
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities 1,579 1,620
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Other Investments [Member]    
Assets Fair Value Disclosure [Abstract]    
Available-For-Sale Securities, Debt Securities $ 500 $ 1,000