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Borrowings (Collateral Pledged for Repurchase Agreements) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]    
Available-for-sale Securities Pledged as Collateral $ 157,233 $ 193,918
Short-term Borrowings 62,256 53,046
Mortgage-backed Securities-Government Sponsored Entities [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Available-for-sale Securities Pledged as Collateral 36,195 40,161
Maturity Overnight [Member] | Mortgage-backed Securities-Government Sponsored Entities [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Available-for-sale Securities Pledged as Collateral 36,195 40,161
Securities Sold under Agreements to Repurchase [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Available-for-sale Securities Pledged as Collateral 36,195 40,161
Short-term Borrowings $ 30,505 $ 37,457