CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 237,578	$ 28,704	$ 334,630	$ 120,842
Postretirement benefits:
Amortization of prior service costs/actuarial gain	(18)	(20)	(36)	(39)
Income tax expense	3	4	7	8
Total comprehensive income	$ 237,563	$ 28,688	$ 334,601	$ 120,811