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Retirement Plans - Defined Benefit Plan, Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
United States [Member] | Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost   $ 13
Net periodic pension cost   13
United States [Member] | Retiree Healthcare Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 151 142
Interest cost 176 159
Expected return on plan assets (219) (177)
Net amortization: Prior service credit (5) (5)
Net periodic pension cost 103 119
Non-U.S. Pension Plans [Member] | Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 1,099 1,082
Interest cost 345 434
Expected return on plan assets (456) (543)
Net amortization: Prior service credit (40) (37)
Net amortization: Net actuarial loss 385 135
Net periodic pension cost $ 1,333 $ 1,071