Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2025

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Costs

Components of net periodic benefit (income) cost for the Company's defined benefit plans were as follows (in thousands):

	Three months ended				Nine months ended
	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Pension and SERPA Benefits:
Service cost	$	963	$	1,175	$	2,889	$	3,525
Interest cost	20,501		20,118		61,505		60,355
Expected return on plan assets	(32,799)		(33,143)		(98,397)		(99,429)
Amortization of unrecognized:
Prior service cost	380		188		1,140		564
Net gain	(174)		(163)		(522)		(489)
Special retirement benefit cost	—		—		—		1,722
Net periodic benefit income	$	(11,129)	$	(11,825)	$	(33,385)	$	(33,752)
Postretirement Healthcare Benefits:
Service cost	$	643	$	723	$	1,929	$	2,169
Interest cost	2,618		2,694		7,854		8,082
Expected return on plan assets	(4,675)		(4,424)		(14,025)		(13,272)
Amortization of unrecognized:
Prior service cost	149		149		447		447
Net gain	(1,369)		(1,250)		(4,107)		(3,750)
Net periodic benefit income	$	(2,634)	$	(2,108)	$	(7,902)	$	(6,324)