Employee Benefit Plans (Stock-Based Compensation Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	$ 24,755	$ 19,763	$ 24,590
Income tax benefit	5,261	4,776	4,120
Non-Vested Stock Awards/ Stock Units Outstanding [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Non-vested restricted stock units	20,216	19,457	16,734
Director deferred stock units outstanding [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Non-vested restricted stock units	1,020	934	880
Performance Shares [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Non-vested restricted stock units	$ 3,519		$ 6,976
Restricted Stock or Unit Expense Reversal		$ (628)