Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Payment Arrangement, Activity [Table Text Block]

Following is a summary of stock option activity for the year ended December 31, 2025, relating to the stock options awarded under the 2018 LTIP and the 2009 LTIP:

	Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value(a) (In thousands)
Options outstanding at December 31, 2024	1,000,500	$	50.93	6.91	$	82,062
Granted	—	—
Exercised	(161,400)	49.26
Forfeited	—	—
Options outstanding at December 31, 2025	839,100	$	51.25	5.97	$	64,359
Options vested or expected to vest at December 31, 2025	821,250	$	51.18	5.96	$	63,046
Options exercisable at December 31, 2025	342,100	$	46.87	5.16	$	27,738

(a)Intrinsic value is defined as the amount by which the fair value of the underlying common shares exceeds the exercise price of the option.

Share-Based Payment Arrangement, Restricted Stock Unit, Activity

The following table summarizes employee restricted share units activity for the year ended December 31, 2025, relating to the restricted share units awarded to employees under the 2018 LTIP:

	Shares	Weighted Average Grant price
Employee RSUs outstanding at December 31, 2024	129,941	$	124.66
Granted	88,603	119.65
Vested	(30,018)	124.38
Forfeited	—	—
Employee RSUs outstanding at December 31, 2025	188,526	$	122.35

Share-Based Payment Arrangement, Nonemployee Director Award Plan, Activity

The following table summarizes director restricted stock units activity for the year ended December 31, 2025, relating to the restricted stock units awarded to directors under the 2018 LTIP:

	Shares	Weighted Average Grant price
Director RSUs outstanding at December 31, 2024	79,696	$	67.11
Granted	12,754	73.16
Exercised	(11,997)	66.67
Forfeited	—	—
Director RSUs outstanding at December 31, 2025	80,453	$	68.14
Vested or expected to vest at December 31, 2025	67,699	$	67.19

Share-Based Payment Arrangement, Performance Shares, Activity

The following table summarizes PSU activity for the year ended December 31, 2025, relating to the PSU’s awarded under the 2018 LTIP:

	Market Conditions			Performance Conditions
	Shares	Aggregate Intrinsic Value(a) (In thousands)		Shares	Aggregate Intrinsic Value(a) (In thousands)
PSUs outstanding at December 31, 2024	16,342	$	1,013	65,376	$	3,913
Granted	4,345			17,384
Adjustment for performance results achieved (b)	3,362			13,447
Vested	(10,085)			(40,343)
Forfeited	—			—
PSUs outstanding at December 31, 2025	13,964	$	517	55,864	$	1,708

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award

The following table summarizes deferred compensation activity under the Executive Plan for the year ended December 31, 2025:

	Shares	Weighted Average share price
Deferred Compensation Equity Units outstanding at December 31, 2024	44,651	$	52.34
Additions	2,135	119.44
Dividends	—	—
Distributions	(38,317)	52.46
Deferred Compensation Equity Units outstanding at December 31, 2025	8,469	$	68.71

Five Year Service Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of our five-year service-based stock options granted during the year ended December 31, 2023 was established at the date of grant using the Black-Scholes pricing model, with the weighted average assumptions as follows:

	Year Ended December 31,
	2023
Risk-free interest rate	4.02		%
Expected volatility	38.54		%
Expected term (in years)	5.5
Weighted average grant date fair value of options granted during the period	$	24.67