Derivative Instruments (Balance Sheet Offsetting) (Details) - USD ($) $ in Thousands		Jun. 30, 2024	Dec. 31, 2023
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		$ 86,709	$ 116,876
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Assets	[1]	86,709	116,876
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		36,915	37,899
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liabilities	[1]	36,915	37,899
Derivatives subject to master netting agreements
Derivative Asset, Fair Value, Gross Asset		86,398	116,702
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Net Amount Presented in the Balance Sheet		86,398	116,702
Derivative Asset, Not Offset, Policy Election Deduction		(2,479)	(3,930)
Derivative Asset, Fair Value of Collateral		(81,090)	(107,492)
Derivative Asset, Fair Value, Amount Offset Against Collateral		2,829	5,280
Derivative Liability, Fair Value, Gross Liability		36,628	37,300
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Net Amount Presented in the Balance Sheet		36,628	37,300
Derivative Liability, Not Offset, Policy Election Deduction		(2,479)	(3,930)
Derivative Liability, Fair Value of Collateral		0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral		34,149	33,370
Derivatives not subject to master netting agreements
Derivative Asset, Fair Value, Gross Asset		311	174
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Not Subject to Master Netting Arrangement		311	174
Derivative Liability, Fair Value, Gross Liability		287	599
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Not Subject to Master Netting Arrangement		$ 287	$ 599

[1] * The fair value of each class of derivative is shown in Note 11.