CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Common Stock Member	Additional Paid In Capital Member	Retained Earnings Member	Accumulated other comprehensive income (loss)	Treasury Stock
Beginning Balance at Dec. 31, 2024			$ 49,187	$ 147,940	$ 3,861,073	$ (243,225)	$ (1,365,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		$ 101,337			101,337
Other comprehensive income (loss), net of tax		18,938				18,938
Dividends paid/declared					(7,929)
Restricted stock				(11,287)			11,287
Employee stock purchase plan				3,657			2,324
Share-based compensation				5,197			74
Repurchases of common stock	[1]						(14,250)
Other				(290)			290
Ending Balance at Mar. 31, 2025			49,187	145,217	3,954,481	(224,287)	(1,365,451)
Beginning Balance at Dec. 31, 2024			49,187	147,940	3,861,073	(243,225)	(1,365,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax						69,413
Ending Balance at Dec. 31, 2025		2,533,574	49,187	165,014	4,310,680	(173,812)	(1,817,495)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		128,186			128,186
Other comprehensive income (loss), net of tax		(20,216)				(20,216)
Dividends paid/declared					(8,873)
Restricted stock				(13,681)			13,681
Employee stock purchase plan				4,457			2,024
Share-based compensation				7,128			57
Repurchases of common stock	[1]						(14,492)
Other				(592)			592
Ending Balance at Mar. 31, 2026		$ 2,631,845	$ 49,187	$ 162,326	$ 4,429,993	$ (194,028)	$ (1,815,633)

[1] For the three months ended March 31, 2026 and March 31, 2025, the Corporation repurchased approximately 22,000 and 42,000 shares, respectively, of its common stock.