Annual report pursuant to Section 13 and 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)
$ in Thousands
Dec. 31, 2020
USD ($)
HTM Securities, Amortized Cost $ 544,851
Moody's AAA/AA/A  
HTM Securities, Amortized Cost 532,157
Moody's Not Rated - Agency  
HTM Securities, Amortized Cost 8,084
Moody's Not Rated - Non-Agency  
HTM Securities, Amortized Cost 4,610
U.S. government and agency securities  
HTM Securities, Amortized Cost 2,751
U.S. government and agency securities | Moody's AAA/AA/A  
HTM Securities, Amortized Cost 0
U.S. government and agency securities | Moody's Not Rated - Agency  
HTM Securities, Amortized Cost 2,751
U.S. government and agency securities | Moody's Not Rated - Non-Agency  
HTM Securities, Amortized Cost 0
Obligations of states and political subdivisions  
HTM Securities, Amortized Cost 536,767
Obligations of states and political subdivisions | Moody's AAA/AA/A  
HTM Securities, Amortized Cost 532,157
Obligations of states and political subdivisions | Moody's Not Rated - Agency  
HTM Securities, Amortized Cost 0
Obligations of states and political subdivisions | Moody's Not Rated - Non-Agency  
HTM Securities, Amortized Cost 4,610
Total mortgage-back securities  
HTM Securities, Amortized Cost 5,333
Total mortgage-back securities | Moody's AAA/AA/A  
HTM Securities, Amortized Cost 0
Total mortgage-back securities | Moody's Not Rated - Agency  
HTM Securities, Amortized Cost 5,333
Total mortgage-back securities | Moody's Not Rated - Non-Agency  
HTM Securities, Amortized Cost $ 0