Defined Benefit Pension Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	$ 351	$ 516
Interest cost	[2]	884	592
Expected return on plan assets	[2]	(1,147)	(1,159)
Recognized net actuarial loss	[2]	0	255
Net periodic benefit cost		88	204
Non-Qualified Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	39	54
Interest cost	[2]	176	106
Expected return on plan assets	[2]	0	0
Recognized net actuarial loss	[2]	59	173
Net periodic benefit cost		$ 274	$ 333

[1] Included in salaries and employee benefits expense in the Unaudited Consolidated Statements of Income.

[2] Included in other expenses in the Unaudited Consolidated Statements of Income.