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Derivatives - Fair Value Hedges in Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Carrying Amount of the Hedged Assets $ 46,060 $ 42,710
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets $ 6,885 $ 3,446