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Subsequent Events (Details)
$ in Millions
9 Months Ended
Oct. 30, 2020
USD ($)
shares
Sep. 30, 2020
USD ($)
location
Empire Bancorp Inc    
Subsequent Event [Line Items]    
Total loan   $ 672.3
Merger related expenses   $ 1.5
Number Of Branches | location   4
Subsequent Event | Empire Bancorp Inc    
Subsequent Event [Line Items]    
Fair value of consideration transferred $ 87.5  
Business acquisition, cash payment $ 54.8  
Shares isssued on acquisition | shares 2,557,286  
Subsequent Event | Empire Bancorp Inc    
Subsequent Event [Line Items]    
Ownership interest acquired (as a percent) 100.00%