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Loans (Additional Information) (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
loan
Mar. 31, 2019
loan
Dec. 31, 2019
USD ($)
Receivables [Abstract]      
Interest income on non-accrual loans $ 3,000    
Troubled debt restructurings 116,000    
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring $ 0   $ 0
Number of loans modified as troubled debt restructurings | loan 0 0  
Number of loans modified as troubled debt restructuring subsequently defaulted | loan 0 0  
Threshold amount to individually classify loans by credit risk $ 250,000