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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Schedule of Restructuring and Other Net (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve
Ending balance	$ 453
Pre-2012 Activities
Restructuring Cost and Reserve
Beginning Balance	597	796	1,084	2,187
Change in estimate	(448)		(105)
Cash payments	(149)	(199)	(183)	(1,103)
Ending balance		597	796	1,084
Q3 2012 Activity
Restructuring Cost and Reserve
Beginning Balance			243
Provision				687
Cash payments			(243)	(444)
Ending balance				243
Q3 2013 Activity
Restructuring Cost and Reserve
Provision	1,337
Cash payments	(884)
Ending balance	453
Employee Serverance And Benefits
Restructuring Cost and Reserve
Ending balance	453
Employee Serverance And Benefits \| Pre-2012 Activities
Restructuring Cost and Reserve
Beginning Balance				325
Cash payments				(325)
Employee Serverance And Benefits \| Q3 2012 Activity
Restructuring Cost and Reserve
Beginning Balance			243
Provision				687
Cash payments			(243)	(444)
Ending balance				243
Employee Serverance And Benefits \| Q3 2013 Activity
Restructuring Cost and Reserve
Provision	1,337
Cash payments	(884)
Ending balance	453
Facility Exit Costs \| Pre-2012 Activities
Restructuring Cost and Reserve
Beginning Balance	597	796	1,084	1,862
Change in estimate	(448)		(105)
Cash payments	(149)	(199)	(183)	(778)
Ending balance		$ 597	$ 796	$ 1,084