Benefit Plans - Schedule of Reconciliation of Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in plan assets
Fair value of assets at beginning of year	$ 331,172
Fair value of plan assets at end of year	348,360	$ 331,172
Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year	287,044	297,834
Service cost	6,571	6,662	$ 7,569
Interest cost	15,600	14,451	14,234
Actuarial loss (gain)	4,860	(14,816)
Implicit rate subsidy	0	0
Plan participants contributions	0	0
Administrative expenses paid	(101)	(146)
Benefits paid and settlements	(20,832)	(16,941)
Benefit obligation at end of year	293,142	287,044	297,834
Change in plan assets
Fair value of assets at beginning of year	307,947	285,504
Actual return on plan assets	30,763	31,523
Employer contributions	5,675	8,007
Plan participants contributions	0	0
Administrative expenses paid	(101)	(146)
Benefits paid and settlements	(20,832)	(16,941)
Fair value of plan assets at end of year	323,452	307,947	285,504
Funded status at end of year	30,310	20,903
Other Postretirement Benefits
Change in benefit obligation
Benefit obligation at beginning of year	25,080	24,264
Service cost	624	665	638
Interest cost	1,351	1,181	1,268
Actuarial loss (gain)	(2,332)	(146)
Implicit rate subsidy	(109)	(336)
Plan participants contributions	149	183
Administrative expenses paid	0	0
Benefits paid and settlements	(1,042)	(731)
Benefit obligation at end of year	23,721	25,080	24,264
Change in plan assets
Fair value of assets at beginning of year	23,225	21,207
Actual return on plan assets	2,562	2,879
Employer contributions	7	7
Plan participants contributions	149	183
Administrative expenses paid	(48)	(71)
Benefits paid and settlements	(987)	(980)
Fair value of plan assets at end of year	24,908	23,225	$ 21,207
Funded status at end of year	$ 1,187	$ (1,855)