Employee Benefits (Schedule of Net Funded (Unfunded) Status) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Qualified Pension Plan [Member]
Change in Benefit Obligation:
Benefit obligation at beginning of period		$ 66,656	$ 89,408
Service cost	[1]	1,403	2,062	$ 2,369
Interest cost	[2]	3,540	2,368	2,004
Actuarial (gain) loss		8,522	(23,658)
Benefits paid		(4,570)	(3,422)
Administrative expenses		(267)	(102)
Benefit obligation at end of period		75,284	66,656	89,408
Change in Plan Assets:
Fair value of plan assets at beginning of period		81,553	103,047
Actual return on plan assets		6,121	(17,970)
Employer contributions		0	0
Benefits paid		(4,570)	(3,422)
Administrative expenses		(267)	(102)
Fair value of plan assets at end of period		82,837	81,553	103,047
Funded (unfunded) status at end of period	[3]	7,553	14,897
Non-Qualified Retirement Plans [Member]
Change in Benefit Obligation:
Benefit obligation at beginning of period		13,562	17,717
Service cost	[1]	156	218	208
Interest cost	[2]	706	423	337
Actuarial (gain) loss		(279)	(3,880)
Benefits paid		(950)	(916)
Administrative expenses		0	0
Benefit obligation at end of period		13,195	13,562	17,717
Change in Plan Assets:
Fair value of plan assets at beginning of period		0	0
Actual return on plan assets		0	0
Employer contributions		950	916
Benefits paid		(950)	(916)
Administrative expenses		0	0
Fair value of plan assets at end of period		0	0	$ 0
Funded (unfunded) status at end of period	[3]	$ (13,195)	$ (13,562)

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

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

[3] Funded status of the qualified pension plan is included in other assets in the Consolidated Balance Sheets. Unfunded status of the non-qualified retirement plans is included in other liabilities in the Consolidated Balance Sheets.