Derivative Financial Instruments - Schedule of Cumulative Basis Adjustments For Fair Value Hedges (Details) $ in Thousands	Jun. 30, 2020 USD ($)	[1]
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Carrying Amount of the Hedged Assets	$ 39,291
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets	$ 900

[1] These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. As of June 30, 2020, the amortized cost basis of the closed portfolios used in these hedging relationships was $38.4 million, the cumulative basis adjustments associated with these hedging relationships were $0.9 million, and the amounts of the designated hedged items were $20.0 million.