Employee Benefit Plans - Schedule of Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss):
Tax related expense (benefit) plans included in other comprehensive income	$ 5,000	$ 1,000	$ (2,000)
Defined benefit pension plans
Net Periodic Benefit Cost (Credit):
Service cost	3,400	3,388	3,371
Interest cost	20,523	20,181	20,966
Expected return on plan assets	(17,575)	(18,738)	(20,372)
Amortization of prior service cost (credit)	200	194	150
Recognized actuarial loss (gain)	8,683	7,781	5,893
Settlement (gain)	(68)	0	(59)
Curtailment (gain)	(121)	0	0
Net periodic benefit cost (credit)	15,042	12,806	9,949
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss):
Net actuarial (gain) loss	(19,309)	(5,086)	904
Prior service cost	0	131	1,169
Amortization of prior service (cost) credit	(200)	(194)	(150)
Total recognized in other comprehensive (income) loss	(19,509)	(5,149)	1,923
Total recognized in net periodic benefit cost (credit) and other comprehensive income (loss)	(4,467)	7,657	11,872
Postretirement benefit plans
Net Periodic Benefit Cost (Credit):
Service cost	1	2	1
Interest cost	144	180	179
Expected return on plan assets	0	0	0
Amortization of prior service cost (credit)	(1,997)	(2,038)	(2,038)
Recognized actuarial loss (gain)	(292)	(190)	(226)
Settlement (gain)	0	0	0
Curtailment (gain)	0	0	0
Net periodic benefit cost (credit)	(2,144)	(2,046)	(2,084)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss):
Net actuarial (gain) loss	32	(433)	311
Prior service cost	0	0	0
Amortization of prior service (cost) credit	1,997	2,038	2,038
Total recognized in other comprehensive (income) loss	2,029	1,605	2,349
Total recognized in net periodic benefit cost (credit) and other comprehensive income (loss)	$ (115)	$ (441)	$ 265