Extended Product Warranty Included in Short and Long-Term Deferred Revenue and Customer Advances (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Schedule of Accrued Liabilities [Line Items]
Balance at beginning of period	$ 33,949	$ 28,599	$ 34,909	$ 26,987
Deferral of new extended warranty revenue	11,960	8,734	14,321	12,205
Recognition of extended warranty deferred revenue	(5,857)	(2,479)	(9,178)	(4,338)
Balance at end of period	$ 40,052	$ 34,854	$ 40,052	$ 34,854