Derivative Instruments (Balance Sheet Offsetting) (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		$ 104,936	$ 60,492
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Assets	[1]	104,936	60,492
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		51,998	54,984
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liabilities	[1]	51,998	54,984
Derivatives subject to master netting agreements
Derivative Asset, Fair Value, Gross Asset		104,855	60,270
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Net Amount Presented in the Balance Sheet		104,855	60,270
Derivative Asset, Not Offset, Policy Election Deduction		(746)	(1,007)
Derivatve asset, fair value of collateral		(100,290)	(56,816)
Derivative Asset, Fair Value, Amount Offset Against Collateral		3,819	2,447
Derivative Liability, Fair Value, Gross Liability		51,584	54,609
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Net Amount Presented in the Balance Sheet		51,584	54,609
Derivative Liability, Not Offset, Policy Election Deduction		(746)	(1,007)
Derivative Liability, Fair Value of Collateral		0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral		50,838	53,602
Derivatives not subject to master netting agreements
Derivative Asset, Fair Value, Gross Asset		81	222
Derivative Asset, Amount Offset by Liabiilty		0	0
Derivative Asset, Not Subject to Master Netting Arrangement		81	222
Derivative Liability, Fair Value, Gross Liability		414	375
Derivative Liability, Amount Offset by Asset		0	0
Derivative Liability, Not Subject to Master Netting Arrangement		$ 414	$ 375

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