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Benefit Plans
 9 Months Ended
Sep. 27, 2025
Retirement Benefits [Abstract]  
Benefit Plans Benefit Plans
Pension and Other Postretirement Plans

The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The components of net periodic benefit cost (income) are as follows:

 For the Quarter EndedFor the Nine Months Ended
(In thousands) September 27, 2025September 28, 2024September 27, 2025September 28, 2024
Pension benefits:    
Interest cost$611 $581 $1,834 $1,744 
Expected return on plan assets(554)(605)(1,661)(1,813)
Amortization of net loss81 32 245 98 
Net periodic benefit cost$138 $8 $418 $29 
Other benefits:   
Service cost$46 $54 $139 $163 
Interest cost123 131 369 392 
Amortization of prior service credit— (1)(1)(2)
Amortization of net gain(101)(98)(305)(295)
Net periodic benefit cost$68 $86 $202 $258 

The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income.

Multiemployer Plan

On August 2, 2024, the Company entered into an equity purchase agreement to acquire all of the outstanding shares of Elkhart. Elkhart contributes to the IAM National Pension Fund, National Pension Plan (IAM Plan), a multiemployer defined benefit plan.

As of September 27, 2025, the Company withdrew from the IAM Plan and recognized $4.8 million in related expenses, which represents the Company’s best estimate of probable loss for the related withdrawal liability.