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Schedule of Net Periodic Pension and Postretirement (income) Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 04, 2021
Jun. 28, 2020
Jul. 04, 2021
Jun. 28, 2020
Defined Benefit Plan Disclosure        
Net actuarial loss (gain)     $ (627) $ (99)
UNITED STATES        
Defined Benefit Plan Disclosure        
Service cost $ 452 $ 433 905 866
Interest cost 1,096 1,523 2,196 3,045
Expected return on plan assets (936) (1,232) (1,872) (2,464)
Net actuarial loss (gain) (400) 180 (400) 180
Total net periodic pension cost 212 904 829 1,627
Foreign Pension Plans, Defined Benefit        
Defined Benefit Plan Disclosure        
Service cost 245 208 491 417
Interest cost 88 119 175 238
Expected return on plan assets (17) (15) (33) (31)
Total net periodic pension cost 316 312 633 624
Postretirement Benefit Plans        
Defined Benefit Plan Disclosure        
Service cost 17 17 33 28
Interest cost 41 58 85 120
Amortization of prior service cost (2) (2) (4) (4)
Net actuarial loss (gain) (228) (279) (228) (279)
Total net periodic pension cost $ (172) $ (206) $ (114) $ (135)