Annual report [Section 13 and 15(d), not S-K Item 405]

SECURITIES AND OTHER INVESTMENTS (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details)

v3.25.0.1
SECURITIES AND OTHER INVESTMENTS (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
HTM Securities, Amortized Cost $ 803,851 $ 837,378
Moody's AAA/AA/A    
HTM Securities, Amortized Cost 692,671 698,219
Moody's BBB/BB/B    
HTM Securities, Amortized Cost 1,144 1,166
Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 64,595 68,039
Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 45,441 69,954
US States and Political Subdivisions Debt Securities [Member]    
HTM Securities, Amortized Cost 697,683 699,189
US States and Political Subdivisions Debt Securities [Member] | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 686,923 688,499
US States and Political Subdivisions Debt Securities [Member] | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 1,144 1,166
US States and Political Subdivisions Debt Securities [Member] | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 0 0
US States and Political Subdivisions Debt Securities [Member] | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 9,616 9,524
Corporate Bond Securities [Member]    
HTM Securities, Amortized Cost 3,322 4,349
Corporate Bond Securities [Member] | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 0 0
Corporate Bond Securities [Member] | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 3,322 4,349
Collateralized Mortgage-Backed Securities [Member]    
HTM Securities, Amortized Cost 102,846 133,840
Collateralized Mortgage-Backed Securities [Member] | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 5,748 9,720
Collateralized Mortgage-Backed Securities [Member] | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 0 0
Collateralized Mortgage-Backed Securities [Member] | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 64,595 68,039
Collateralized Mortgage-Backed Securities [Member] | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost $ 32,503 $ 56,081