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Derivative Financial Instruments - Offsetting of Derivative Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Gross Amounts of Recognized Liabilities Presented in the Consolidated Balance Sheets $ 162 $ 337
Derivative Financial Instruments (56) (103)
Cash Collateral Pledged 0 0
Net Amount $ 106 $ 234