Pension Plans and Other Postretirement Benefit Plan - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Pension Plans
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 47	$ 48	$ 94	$ 96
Interest cost	486	494	972	988
Expected return on plan assets	(246)	(238)	(492)	(476)
Recognized actuarial loss	99	85	198	170
Net periodic benefit cost	386	389	772	778
Postretirement Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	4	4	8	8
Interest cost	22	24	44	48
Expected return on plan assets	0	0	0	0
Recognized actuarial loss	10	0	20	0
Net periodic benefit cost	$ 36	$ 28	$ 72	$ 56

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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