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Cash and Due from Banks (Details)
Dec. 31, 2018
USD ($)
Cash and Due from Banks [Abstract]  
Minimum average daily balance $ 983,000
Compensating Balances [Line Items]  
Required balance 500,000
Compensating balance, initial margin on interest rate swap 100,000
Compensating balance, fair value exposure on interest rate swap 300,000
Federal Reserve Bank  
Compensating Balances [Line Items]  
Required balance $ 0