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COVID-19 - Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Loan
Credit
May 15, 2020
USD ($)
Loan
Mar. 15, 2020
Mar. 03, 2020
Dec. 31, 2019
USD ($)
Loan
Mar. 31, 2019
USD ($)
Unusual Or Infrequent Item [Line Items]            
Number of loans outstanding | Loan 1,573       1,657  
Total loans $ 750,202       $ 781,341 $ 657,680
Loans $ 740,916       $ 772,782  
Subsequent Event [Member] | COVID-19 [Member]            
Unusual Or Infrequent Item [Line Items]            
Number of loans outstanding | Loan   540        
Total loans   $ 142,900        
Total Related Credits [Member]            
Unusual Or Infrequent Item [Line Items]            
Basis point reduction in target federal funds rate     1.00% 0.50%    
Number of related credit relationships | Credit 25          
Number of individual loans | Loan 179          
Loans $ 192,000          
Total Related Credits [Member] | COVID-19 [Member]            
Unusual Or Infrequent Item [Line Items]            
Percentage of federal funds rate yield on assets as result of decline in feral reserve board target 0.00%          
Total Related Credits [Member] | Individual Loans [Member]            
Unusual Or Infrequent Item [Line Items]            
Total loans $ 5,000          
Total Related Credits [Member] | Real Estate [Member]            
Unusual Or Infrequent Item [Line Items]            
Loans 182,400          
Total Related Credits [Member] | Unsecured Loans [Member]            
Unusual Or Infrequent Item [Line Items]            
Loans $ 9,600          
Total Related Credits [Member] | Minimum [Member]            
Unusual Or Infrequent Item [Line Items]            
Percentage of decrease in federal funds rate target 0.00%          
Total loans $ 5,000          
Total Related Credits [Member] | Maximum [Member]            
Unusual Or Infrequent Item [Line Items]            
Percentage of decrease in federal funds rate target 0.25%          
Total loans $ 12,800