Defined Benefit Pension Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	$ 516	$ 592	$ 1,547	$ 1,777
Interest cost	[2]	592	500	1,776	1,502
Expected return on plan assets	[2]	(1,159)	(1,203)	(3,476)	(3,611)
Recognized net actuarial loss	[2]	255	531	765	1,591
Net periodic benefit cost		204	420	612	1,259
Non-Qualified Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	54	52	163	156
Interest cost	[2]	105	84	317	253
Expected return on plan assets	[2]	0	0	0	0
Recognized net actuarial loss	[2]	173	180	519	542
Net periodic benefit cost		$ 332	$ 316	$ 999	$ 951

[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.