Capital Stock - Schedule of Common Stock Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Common Stock
Common Stock Activity [Roll Forward]
Beginning balance	$ 336,175	$ 320,556	$ 329,953	$ 312,324
Stock compensation expense	(3,351)	(4,217)	(11,350)	(13,446)
Ending balance	339,256	324,609	339,256	324,609
Treasury Cost
Common Stock Activity [Roll Forward]
Beginning balance	(442,123)	(376,556)	(396,604)	(361,684)
Stock compensation expense	0	0	0	0
Ending balance	(442,989)	(386,822)	(442,989)	(386,822)
Restricted and performance stock awards | Common Stock
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	278	275	3,285	2,058
Restricted and performance stock awards | Treasury Cost
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	(278)	(275)	3,285	2,058
Stock options exercised | Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	(8)	(111)	(303)	(323)
Stock options exercised | Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	(6)	(57)	(208)	(171)
Treasury shares purchased for stock compensation programs | Common Stock
Common Stock Activity [Roll Forward]
Treasury shares purchased for stock compensation programs	0	0	0	0
Treasury shares purchased for stock compensation programs | Treasury Cost
Common Stock Activity [Roll Forward]
Treasury shares purchased for stock compensation programs	(1,150)	(571)	(10,030)	(7,400)
Employee stock purchase program | Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense			(935)	(574)
Employee stock purchase program | Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense			(147)	(60)
Share repurchase program | Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	0	0	0	0
Share repurchase program | Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	$ 0	$ (10,027)	$ (39,995)	$ (20,027)