Components of Gain (Loss) (Detail) - USD ($) $ in Thousands		12 Months Ended
	Mar. 29, 2013	Dec. 31, 2013
Liabilities divested:
Gain (Loss) on sale		$ (208)
DeltaNu
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds	$ 500	$ 500
Assets sold:
Accounts receivable	147
Inventories	320
Other current assets	27
Property, plant and equipment	159
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
Gain (Loss) on sale	$ (208)