Employee Benefits (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Employer contribution to 401k plan		$ 4,200	$ 3,500	$ 3,200
Deferred compensation plan, accrued liability		$ 21,500	20,600
Non-elective Employer Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer non-elective contribution % to 401k plan		4.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer non-elective contribution % to 401k plan		3.00%
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated qualified pension plan surplus after settlement	[1]	$ 7,734	7,553
Accumulated benefit obligation		69,700	75,300
Non-Qualified Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated qualified pension plan surplus after settlement	[1]	(12,720)	(13,195)
Available-for-sale securities and other short-term investments, rabbi trusts		13,000	13,600
Accumulated benefit obligation		12,700	$ 13,200
Estimated future employer contributions in next fiscal year		859
Estimated settlement charge upon settlement
Defined Benefit Plan Disclosure [Line Items]
Estimated non-cash qualified pension plan settlement charge		6,400
Estimated funded status upon settlement
Defined Benefit Plan Disclosure [Line Items]
Estimated qualified pension plan surplus after settlement		$ 10,300

[1] 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.