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Subsequent Events (Details)
3 Months Ended 9 Months Ended
Oct. 23, 2020
$ / shares
Sep. 30, 2020
$ / shares
Sep. 30, 2019
$ / shares
Sep. 30, 2020
$ / shares
Sep. 30, 2019
$ / shares
Oct. 06, 2020
office
Oct. 05, 2020
office
Subsequent Event [Line Items]              
Cash dividends declared (in dollars per share) | $ / shares   $ 0.25 $ 0.22 $ 0.75 $ 0.66    
Subsequent Event              
Subsequent Event [Line Items]              
Cash dividends declared (in dollars per share) | $ / shares $ 0.28            
Number of bank branch offices consolidated | office             20
Number of bank branch offices operated | office           65