Capital Stock - Schedule of Common Stock Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Common Stock
Common Stock Activity [Roll Forward]
Beginning balance	$ 287,009	$ 262,627	$ 281,980	$ 260,121
Stock compensation expense	6,759	4,629	13,029	8,358
Ending balance	294,364	267,645	294,364	267,645
Treasury Cost
Common Stock Activity [Roll Forward]
Beginning balance	(362,280)	(331,160)	(359,838)	(328,776)
Stock compensation expense	0	0	0	0
Ending balance	(362,025)	(359,314)	(362,025)	(359,314)
Restricted and performance stock awards | Common Stock
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	(190)	(201)	(1,434)	(1,461)
Restricted and performance stock awards | Treasury Cost
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	190	201	1,434	1,461
Stock options exercised | Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	354	166	357	203
Stock options exercised | Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	184	80	185	95
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	(184)	(272)	(3,871)	(3,931)
Employee stock purchase program | Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	432	424	432	424
Employee stock purchase program | Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	65	62	65	62
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	$ (28,225)	$ 0	$ (28,225)