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Short-Term Borrowings Short-Term Borrowings (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase $ 79,726 $ 26,406
Maturity Overnight [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 70,382 10,870
Maturity up to 30 days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 0 6,307
Maturity 30 to 90 Days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase 0 8,683
Maturity over 90 days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities Sold under Agreements to Repurchase $ 9,344 $ 546