Stock Based Compensation Stock Based Compensation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized		4,270,341
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		801,621
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value		$ 13,300,000	$ 50,100,000	$ 45,200,000
Share-based Payment Arrangement, Expense		5,000,000.0	$ 5,900,000	$ 7,500,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 6,200,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 6 months
Non-employee Director Restricted Stock Units Awarded		1,822
Restricted Stock Units Awarded Under the 2018 LTIP Plan		12,754	11,354	26,350
Value of Stock Units Awarded Under the 2018 LTIP Plan		$ 1,400,000		$ 1,500,000
Total Numbner of Units Outstanding Under the 2006 Director Equity Plan		4,033
Value of Units Outstanding Under the 2006 Director Equity Plan		$ 100,000
Deferred Compensation Liability, Current and Noncurrent		300,000	$ 100,000	900,000
Stock or Unit Option Plan Expense		$ (2,000,000)	$ (400,000)	(500,000)
Total Stock Units Outstanding Under All Stock Option Plans		8,469
Total Value of Units Outstanding Under All Stock Option Plans		$ 600,000
Deferred Compensation Equity		1,100,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits		$ 2,000,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee RSU, Outstanding, Number		188,526	129,941
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee RSU, Grants in Period, Gross		88,603	133,149
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee RSU, Forfeitures in Period		0
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee RSU, Outstanding, Weighted Average Exercise Price		$ 122.35	$ 124.66
Share-Based Compensation Arrangements by Share-Based Payment Award, Employee RSU, Grants in Period, Weighted Average Exercise Price		$ 119.65	$ 124.66
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee RSU, Vested in Period, Gross		(30,018)
Share-Based Compensation Arrangements by Share-Based Payment Award, Employee RSU, Vested in Period, Weighted Average Exercise Price		$ 124.38
Share-Based Compensation Arrangements by Share-Based Payment Award, Employee RSU, Forfeitures in Period, Weighted Average Exercise Price		$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Outstanding, Number		80,453	79,696
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Vested and Expected to Vest, Outstanding, Number		67,699
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Grants in Period, Gross		12,754
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Outstanding, Weighted Average Exercise Price		$ 68.14	$ 67.11
Share-Based Compensation Arrangements by Share-Based Payment Award, Director RSU, Grants in Period, Weighted Average Exercise Price		$ 73.16
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Exercised in Period, Gross		(11,997)
Share-Based Compensation Arrangements by Share-Based Payment Award, Director RSU, Exercised in Period, Weighted Average Exercise Price		$ 66.67
Share-Based Compensation Arrangement by Share-Based Payment Award, Director RSU, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price		$ 67.19
Share-Based Compensation Arrangement by Share-Based Payment Award, Deferred Compensation Equity Units, Outstanding, Number		8,469	44,651
Share-Based Compensation Arrangement by Share-Based Payment Award, Deferred Compensation Equity Units, Additions in Period, Gross		2,135
Share-Based Compensation Arrangement by Share-Based Payment Award, Deferred Compensation Equity Units, Outstanding, Weighted Average Exercise Price		$ 68.71	$ 52.34
Share-Based Compensation Arrangements by Share-Based Payment Award, Deferred Compensation Equity Units, Additions in Period, Weighted Average Exercise Price		119.44
Share-Based Compensation Arrangements by Share-Based Payment Award, Deferred Compensation Equity Units, Distributions in Period, Weighted Average Exercise Price		$ 52.46
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount		$ 13.4
Share-based Payment Arrangement, Expense		$ 5,000,000.0	$ 5,900,000	$ 7,500,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 6 months
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 6,200,000
Share-Based Payment Arrangement, Expense, Tax Benefit		$ 8,700,000	$ 4,700,000
Share-Based Payment Arrangement, Employee RSU Award, Cost Not yet Recognized, Period for Recognition		1 year 4 months 24 days
Share-Based Payment Arrangement, Director RSU Award, Excluding Option, Cost Not yet Recognized, Amount		$ 0.5
Market Condition Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Outstanding, Number		13,964	16,342
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Grants in Period, Gross		4,345
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Adjustments in Period, Gross		3,362
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Vested in Period, Gross		(10,085)
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Outstanding, Intrinsic Value		$ 517,000	$ 1,013,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Deferred Compensation Equity Units, Distributions in Period, Gross		(38,317)
Performance Condition Awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 1,000,000.0
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Outstanding, Number		55,864	65,376
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Grants in Period, Gross		17,384
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Adjustments in Period, Gross		13,447
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Vested in Period, Gross		(40,343)
Share-Based Compensation Arrangement by Share-Based Payment Award, PSU, Outstanding, Intrinsic Value		$ 1,708,000	$ 3,913,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	1,000,000.0
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 300,000