Schedule of Net Periodic Pension and Postretirement Benefit (Income) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jul. 05, 2015	Jul. 03, 2016	Jul. 05, 2015
United States Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Service cost	$ 575	$ 615	$ 1,151	$ 1,231
Interest cost	3,401	3,289	6,815	6,571
Expected return on plan assets	(3,472)	(3,634)	(6,915)	(7,259)
Amortization of prior service cost	24	34	48	67
Actuarial gain	(654)	(3)	(1,848)	(3)
Total net periodic	(126)	301	(749)	607
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Service cost	199	263	406	510
Interest cost	199	385	405	744
Expected return on plan assets	(5)	(215)	(11)	(410)
Settlement			(238)
Total net periodic	$ 393	$ 433	$ 562	$ 844