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Derivative Financial Instruments and Hedging Activities (Details) - Cash Flow Hedging - Interest Rate Swap
$ in Thousands
Sep. 30, 2019
USD ($)
position
Dec. 31, 2018
USD ($)
position
Derivative [Line Items]    
Notional Amount $ 28,500 $ 28,500
Positions | position 3 3
Assets $ 0 $ 0
Liabilities 3,477 804
Cash Collateral Pledged $ 3,950 $ 650