CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 309,261	$ 416,724	$ 556,446
Other comprehensive loss, net of tax:
Net change in unrealized losses on cash flow hedges	(3,083)	(4,173)	(7,563)
Defined benefit pension and other postretirement benefit plans:
Net change in unrecognized prior service costs	14	(339)	(59)
Net change in unrecognized actuarial losses	90	(2,286)	(405)
Other comprehensive loss, net of tax	(2,979)	(6,798)	(8,027)
Comprehensive income	$ 306,282	$ 409,926	$ 548,419