Consolidated Statement of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Income	Retained Earnings [Member]	Noncontrolling Interest
Balance at beginning of period at Dec. 31, 2022	$ 1,673,423	$ 156,089	$ (2,149)	$ 958,329	$ 16,538	$ 544,384	$ 232
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Comprehensive income	546,014
Dividends	(167,983)
Stock option exercises	24,181
Restricted stock awards, net of forfeitures	0
Share-based compensation earned	17,043
Purchase of Company common stock	549,568
Noncontrolling interest payments	$ (367)
Retirement of treasury shares	0
Other	$ (1,270)
Balance at end of period at Dec. 31, 2023	$ 1,541,473	148,298	(1,975)	937,596	24,891	432,454	209
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Dividends declared per share	$ 1.02
Comprehensive income	$ 486,632
Dividends	(174,282)
Stock option exercises	18,783
Restricted stock awards, net of forfeitures	56,683
Share-based compensation earned	0
Purchase of Company common stock	249,765
Noncontrolling interest payments	$ (359)
Retirement of treasury shares	0
Other	$ (1,214)
Balance at end of period at Dec. 31, 2024	$ 1,678,669	146,670	(1,975)	986,830	(7,221)	553,701	664
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Dividends declared per share	$ 1.12
Comprehensive income	$ 562,493
Dividends	(183,571)
Stock option exercises	17,633
Restricted stock awards, net of forfeitures	29,401
Share-based compensation earned	0
Purchase of Company common stock	464,172
Noncontrolling interest payments	$ (327)
Retirement of treasury shares	0
Other	$ (1,285)
Balance at end of period at Dec. 31, 2025	$ 1,638,841	$ 141,957	$ (2,279)	$ 987,210	$ 12,425	$ 498,958	$ 570
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Dividends declared per share	$ 1.30