Components of Gain (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended		3 Months Ended	1 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Mar. 30, 2013 DeltaNu	Jan. 06, 2012 Mainframe Technology
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds			$ 500	$ 3,000
Assets sold:
Accounts receivable			147
Inventories			320	589
Other current assets			27
Property, plant and equipment			159	178
Trade name			90
Total assets sold			743
Liabilities divested:
Accounts payable			59
Other accrued expenses			6
Total liabilities divested			65
Transaction and other costs			30	26
Gain (Loss) on sale	$ (208)	$ 2,207	$ (208)	$ 2,207