Warranty - Summary of Accrued Warranty Obligation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Product Warranties Disclosures [Abstract]
Balance at the beginning of the year	$ 4,125	$ 4,252
Warranty expense	1,510	1,837
Warranty payments	(1,673)	(1,707)
Balance at the end of the period	$ 3,962	$ 4,382