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Short-Term Borrowings Short-Term Borrowings (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase $ 21,998 $ 26,406
Maturity Overnight [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 9,223 10,870
Maturity up to 30 days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 90 6,307
Maturity 30 to 90 Days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 155 8,683
Maturity over 90 days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase $ 12,530 $ 546