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Long-Term Borrowings (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Summary of long-term advances from the Federal Home Loan Bank    
Amount of Advances $ 42,841 $ 3,775
Weighted Average    
Summary of long-term advances from the Federal Home Loan Bank    
Weighted Average Interest Rate 1.78% 1.70%
Fixed-rate constant payment advances    
Summary of long-term advances from the Federal Home Loan Bank    
Amount of Advances $ 2,841 $ 3,775
Fixed-rate constant payment advances | Weighted Average    
Summary of long-term advances from the Federal Home Loan Bank    
Weighted Average Interest Rate 1.70% 1.70%
Convertible and putable fixed-rate advance    
Summary of long-term advances from the Federal Home Loan Bank    
Amount of Advances $ 40,000 $ 0
Convertible and putable fixed-rate advance | Weighted Average    
Summary of long-term advances from the Federal Home Loan Bank    
Weighted Average Interest Rate 1.79% 0.00%