CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2023			$ 49,187	$ 140,182	$ 3,487,751	$ (213,223)	$ (1,135,484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		$ 175,966			175,966
Other comprehensive income (loss), net of tax		(20,265)				(20,265)
Dividends declared					(15,712)
Restricted stock				(13,879)			13,879
Employee stock purchase plan				2,484			2,988
Share-based compensation				9,251			215
Repurchases of common stock	[1]						(24,796)
Other				(2,464)			2,340
Ending Balance at Jun. 30, 2024			49,187	135,574	3,648,005	(233,488)	(1,140,858)
Beginning Balance at Dec. 31, 2023			49,187	140,182	3,487,751	(213,223)	(1,135,484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax		(30,002)
Ending Balance at Dec. 31, 2024		2,449,799	49,187	147,940	3,861,073	(243,225)	(1,365,176)
Beginning Balance at Mar. 31, 2024			49,187	133,166	3,556,572	(228,255)	(1,130,491)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		99,471			99,471
Other comprehensive income (loss), net of tax		(5,233)				(5,233)
Dividends declared					(8,038)
Share-based compensation				4,689			82
Repurchases of common stock	[1]						(12,606)
Other				(2,281)			2,157
Ending Balance at Jun. 30, 2024			49,187	135,574	3,648,005	(233,488)	(1,140,858)
Beginning Balance at Dec. 31, 2024		2,449,799	49,187	147,940	3,861,073	(243,225)	(1,365,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		222,398			222,398
Other comprehensive income (loss), net of tax		75,108				75,108
Dividends declared					(16,974)
Restricted stock				(11,287)			11,287
Employee stock purchase plan				3,657			2,324
Share-based compensation				10,410			74
Repurchases of common stock	[1]						(35,075)
Other				(1,070)			1,069
Ending Balance at Jun. 30, 2025		2,711,720	49,187	149,650	4,066,497	(168,117)	(1,385,497)
Beginning Balance at Mar. 31, 2025			49,187	145,217	3,954,481	(224,287)	(1,365,451)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		121,061			121,061
Other comprehensive income (loss), net of tax		56,170				56,170
Dividends declared					(9,045)
Share-based compensation				5,213
Repurchases of common stock	[1]						(20,825)
Other				(780)			779
Ending Balance at Jun. 30, 2025		$ 2,711,720	$ 49,187	$ 149,650	$ 4,066,497	$ (168,117)	$ (1,385,497)

[1] For the three and six months ended June 30, 2025, the Corporation repurchased approximately 60,000 and 102,000 shares of its common stock, respectively. For the three and six months ended June 30, 2024, the Corporation repurchased approximately 47,000 and 100,000 shares of its common stock, respectively.