CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 150,474	$ 138,417
Other comprehensive (loss) income, net of tax
Change in unrealized holding (losses) gains on available-for-sale securities	(12,535)	5,778
Pension and other postretirement plans	309	(561)
Total other comprehensive (loss) income, net of tax	(12,226)	5,217
Comprehensive income	$ 138,248	$ 143,634