Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
SECURITIES (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details)
$ in Thousands
Jun. 30, 2020
USD ($)
HTM Securities, Amortized Cost $ 547,561
Moody's AAA/AA/A | Standard & Poor's AAA/AA/A  
HTM Securities, Amortized Cost 534,577
Moody's Not Rated - Agency [Member] | Standard Poors Not Rated - Agency [Member]  
HTM Securities, Amortized Cost 8,374
Moody's Not Rated - Non-Agency [Member] | Standard Poors Not Rated - Non-Agency [Member]  
HTM Securities, Amortized Cost 4,610
U.S. government and agency securities  
HTM Securities, Amortized Cost 2,781
U.S. government and agency securities | Moody's AAA/AA/A | Standard & Poor's AAA/AA/A  
HTM Securities, Amortized Cost 0
U.S. government and agency securities | Moody's Not Rated - Agency [Member] | Standard Poors Not Rated - Agency [Member]  
HTM Securities, Amortized Cost 2,781
U.S. government and agency securities | Moody's Not Rated - Non-Agency [Member] | Standard Poors Not Rated - Non-Agency [Member]  
HTM Securities, Amortized Cost 0
Obligations of states and political subdivisions  
HTM Securities, Amortized Cost 539,187
Obligations of states and political subdivisions | Moody's AAA/AA/A | Standard & Poor's AAA/AA/A  
HTM Securities, Amortized Cost 534,577
Obligations of states and political subdivisions | Moody's Not Rated - Agency [Member] | Standard Poors Not Rated - Agency [Member]  
HTM Securities, Amortized Cost 0
Obligations of states and political subdivisions | Moody's Not Rated - Non-Agency [Member] | Standard Poors Not Rated - Non-Agency [Member]  
HTM Securities, Amortized Cost 4,610
Total mortgage-back securities  
HTM Securities, Amortized Cost 5,593
Total mortgage-back securities | Moody's AAA/AA/A | Standard & Poor's AAA/AA/A  
HTM Securities, Amortized Cost 0
Total mortgage-back securities | Moody's Not Rated - Agency [Member] | Standard Poors Not Rated - Agency [Member]  
HTM Securities, Amortized Cost 5,593
Total mortgage-back securities | Moody's Not Rated - Non-Agency [Member] | Standard Poors Not Rated - Non-Agency [Member]  
HTM Securities, Amortized Cost $ 0