Quarterly report pursuant to Section 13 or 15(d)

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

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SECURITIES (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
HTM Securities, Amortized Cost $ 855,418 $ 847,732
Moody's AAA/AA/A    
HTM Securities, Amortized Cost 711,778 707,505
Moody's BBB/BB/B    
HTM Securities, Amortized Cost 1,182 1,187
Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 71,911 72,412
Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 70,547 66,628
U.S. government and agency securities    
HTM Securities, Amortized Cost 684 687
U.S. government and agency securities | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 0 0
U.S. government and agency securities | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 0 0
U.S. government and agency securities | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 684 687
U.S. government and agency securities | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 0 0
Obligations of states and political subdivisions    
HTM Securities, Amortized Cost 702,749 705,990
Obligations of states and political subdivisions | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 701,567 704,803
Obligations of states and political subdivisions | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 1,182 1,187
Obligations of states and political subdivisions | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 0 0
Obligations of states and political subdivisions | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 0 0
Corporate and other bonds    
HTM Securities, Amortized Cost 5,033 5,159
Corporate and other bonds | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 0 0
Corporate and other bonds | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 0 0
Corporate and other bonds | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 0 0
Corporate and other bonds | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost 5,033 5,159
Mortgage-backed securities    
HTM Securities, Amortized Cost 146,952 135,896
Mortgage-backed securities | Moody's AAA/AA/A    
HTM Securities, Amortized Cost 10,211 2,702
Mortgage-backed securities | Moody's BBB/BB/B    
HTM Securities, Amortized Cost 0 0
Mortgage-backed securities | Moody's Not Rated - Agency    
HTM Securities, Amortized Cost 71,227 71,725
Mortgage-backed securities | Moody's Not Rated - Non-Agency    
HTM Securities, Amortized Cost $ 65,514 $ 61,469