v3.26.1
SECURITIES AND OTHER INVESTMENTS (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost $ 860,906 $ 884,216
Moody's AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 765,332 784,155
Moody's BBB/BB/B    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 1,110 1,122
Moody's Not Rated - Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 63,130 64,867
Moody's Not Rated - Non-Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 31,334 34,072
US States and Political Subdivisions Debt Securities [Member]    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 774,441 793,162
US States and Political Subdivisions Debt Securities [Member] | Moody's AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 763,759 782,453
US States and Political Subdivisions Debt Securities [Member] | Moody's BBB/BB/B    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 1,110 1,122
US States and Political Subdivisions Debt Securities [Member] | Moody's Not Rated - Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 0 0
US States and Political Subdivisions Debt Securities [Member] | Moody's Not Rated - Non-Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 9,572 9,587
Corporate Bond Securities [Member]    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 1,710 2,255
Corporate Bond Securities [Member] | Moody's AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's BBB/BB/B    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's Not Rated - Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's Not Rated - Non-Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 1,710 2,255
Collateralized Mortgage-Backed Securities [Member]    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 84,755 88,799
Collateralized Mortgage-Backed Securities [Member] | Moody's AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 1,573 1,702
Collateralized Mortgage-Backed Securities [Member] | Moody's BBB/BB/B    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 0 0
Collateralized Mortgage-Backed Securities [Member] | Moody's Not Rated - Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost 63,130 64,867
Collateralized Mortgage-Backed Securities [Member] | Moody's Not Rated - Non-Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
HTM Securities, Amortized Cost $ 20,052 $ 22,230