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Business Acquisitions (Details Textual)
$ / shares in Units, $ in Thousands
9 Months Ended
May 01, 2019
USD ($)
bank
$ / shares
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Business Acquisition [Line Items]        
Cash consideration paid   $ 0 $ 467  
Goodwill   $ 15,992   $ 16,477
LBC Bancshares, Inc        
Business Acquisition [Line Items]        
Number of banking locations | bank 2      
Share price (in dollars per share) | $ / shares $ 23.50      
Number of shares received for each share of LBC common stock | shares 1.3239      
Stock consideration received, percentage of shares 55.00%      
Cash consideration received, percentage of shares 45.00%      
Minimum percentage of merger consideration paid 50.00%      
Share of stock issued (in shares) | shares 1,053,875 1,053,875    
Fair value of shares issued $ 18,706 $ 18,221    
Cash consideration paid 15,315 15,315    
Goodwill 15,734 15,249    
Loans purchased at fair value 130,568 $ 130,568    
Discount on loans purchased $ 2,200      
Discount on loans purchased, percentage of loan value 1.63%      
Credit impaired loans acquired $ 176      
LBC Bancshares, Inc | LaGrange, Georgia        
Business Acquisition [Line Items]        
Number of banking locations | bank 1      
LBC Bancshares, Inc | Columbus, Georgia        
Business Acquisition [Line Items]        
Number of banking locations | bank 1      
PFB Mortgage        
Business Acquisition [Line Items]        
Cash consideration paid $ 833      
Goodwill $ 541