Derivative Instruments and Hedging Activities (Details 2) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Assets, Fair Value, Gross Assets	$ 71,590	$ 54,765
Gross Amount of Eligible Offsetting Recognized Derivative Liabilities
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	71,590	54,765
Derivative Asset, Not Offset, Policy Election Deduction	(41,843)	(34,935)
Cash Collateral Received	(9,737)	(7,362)
Derivative Asset, Fair Value, Amount Offset Against Collateral	20,010	12,468
Derivative Liability, Fair Value, Gross Liability	(51,905)	(41,935)
Gross Amount of Eligible Offsetting Recognized Derivative Assets
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(51,905)	(41,935)
Derivative Liability, Not Offset, Policy Election Deduction	41,843	34,935
Cash Collateral Paid	917	827
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ (9,145)	$ (6,173)