Components of Net Periodic Benefit Cost - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Pension plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 108	$ 141
Interest cost	1,016	947
Expected return on plan assets	(1,094)	(1,051)
Net amortization of net (gain) loss		109
Net Periodic Benefit Cost	30	146
Postretirement Health Coverage
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	4
Interest cost	32	34
Net amortization of net (gain) loss	(39)	(20)
Net Periodic Benefit Cost	$ (4)	$ 18