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Retirement Plans - Defined Benefit Plan, Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Pension Plans [Member] | United States [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost   $ 142   $ 284
Interest cost $ 10 1,627 $ 23 3,246
Expected return on plan assets   (630)   (3,415)
Net amortization: Net actuarial loss   772   1,541
Net periodic pension cost (benefit) 10 1,911 23 1,656
Pension Plans [Member] | Non-U.S. Pension Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1,075 1,339 2,157 2,713
Interest cost 430 416 864 844
Expected return on plan assets (538) (481) (1,081) (974)
Net amortization: Prior service credit (37) (32) (74) (63)
Net amortization: Net actuarial loss 132 171 267 348
Net periodic pension cost (benefit) 1,062 1,413 2,133 2,868
Retiree Healthcare Plan [Member] | United States [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 108 151 250 283
Interest cost 230 162 389 318
Expected return on plan assets (177) (175) (354) (353)
Net amortization: Prior service credit (5) (2) (10) (10)
Net periodic pension cost (benefit) $ 156 $ 136 $ 275 $ 238