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Long-Term Borrowings (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Summary of long-term advances from the Federal Home Loan Bank    
Amount of Advances $ 3,775 $ 4,785
Weighted Average    
Summary of long-term advances from the Federal Home Loan Bank    
Weighted Average Interest Rate 1.70% 1.70%
Fixed-rate constant payment advances    
Summary of long-term advances from the Federal Home Loan Bank    
Amount of Advances $ 3,775 $ 4,785
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%