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Pensions and Other Postretirement Benefits
 3 Months Ended
Apr. 01, 2023
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
Employees of VPG participate in various defined benefit pension and other postretirement benefit ("OPEB") plans. The following table sets forth the components of the net periodic benefit cost for the Company's defined benefit pension and OPEB plans (in thousands):
Fiscal quarter ended 
 
April 1, 2023		Fiscal quarter ended 
 
April 2, 2022
Pension
Plans		OPEB
Plans		Pension
Plans		OPEB
Plans
Net service cost$69 $4 $84 $7 
Interest cost190 28 123 17 
Expected return on plan assets(212)(123)— 
Amortization of actuarial losses8 (6)74 1 
Net periodic benefit cost$55 $26 $158 $25