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Retirement Plans - Defined Benefit Plan, Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 03, 2021
Mar. 28, 2020
United States [Member] | Retiree Healthcare Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 233 $ 151
Interest cost 139 176
Expected return on plan assets (255) (219)
Net amortization: Prior service credit (5) (5)
Net amortization: Net actuarial loss 0  
Net periodic pension cost 112 103
Non-U.S. Pension Plans [Member] | Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 1,160 1,099
Interest cost 315 345
Expected return on plan assets (466) (456)
Net amortization: Prior service credit (41) (40)
Net amortization: Net actuarial loss 262 385
Net periodic pension cost $ 1,230 $ 1,333