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Retirement Plans - Defined Benefit Plan, Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
U.S. Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 142 $ 101
Interest cost 1,619 1,719
Expected return on plan assets (2,785) (2,663)
Net amortization: Net actuarial loss 769 651
Net periodic pension (benefit) cost (255) (192)
U.S. Retiree Healthcare Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 132 103
Interest cost 156 150
Expected return on plan assets (178) (147)
Net amortization: Prior service (credit) cost (8)  
Net periodic pension (benefit) cost 102 106
Non-U.S. Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 1,374 1,251
Interest cost 428 358
Expected return on plan assets (493) (402)
Net amortization: Prior service (credit) cost (31) (46)
Net amortization: Net actuarial loss 177 231
Net periodic pension (benefit) cost $ 1,455 $ 1,392