Business Combinations - Additional Information (Detail) (USD $)				0 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Mar. 09, 2012 Spire Semiconductor LLC	Jul. 27, 2012 Phasein
Business Acquisition [Line Items]
Cash paid for acquired entity				$ 7,200,000
Purchase price of acquired entity allocated to liabilities				1,200,000
Purchase price for acquired entity					30,500,000
Purchase price allocation assigned to goodwill	22,793,000	22,824,000	448,000		16,100,000
Purchase price allocation assigned to intangible assets					12,600,000
Purchase price allocation assigned to inventory					1,400,000
Purchase price allocation assigned to other assets					2,400,000
Purchase price allocation assigned to liabilities					$ 2,000,000