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Retirement Plans - Defined Benefit Plan, Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Pension Plans [Member] | United States [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost   $ 142   $ 426
Interest cost   1,622 $ 23 4,868
Expected return on plan assets   (1,708)   (5,123)
Net amortization: Net actuarial loss   771   2,312
Net periodic pension cost   827 23 2,483
Pension Plans [Member] | Non-U.S. Pension Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 1,081 1,311 3,238 4,024
Interest cost 426 406 1,291 1,250
Expected return on plan assets (535) (486) (1,616) (1,442)
Net amortization: Prior service credit (38) (30) (113) (93)
Net amortization: Net actuarial loss 132 167 399 515
Net periodic pension cost 1,066 1,368 3,199 4,254
Retiree Healthcare Plan [Member] | United States [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 124 142 374 425
Interest cost 194 159 583 477
Expected return on plan assets (177) (177) (531) (530)
Net amortization: Prior service credit (5) (4) (15) (14)
Net periodic pension cost $ 136 $ 120 $ 411 $ 358