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Discontinued Operations - Summary of Operating Results for Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Apr. 02, 2012
Discontinued Operations And Disposal Groups [Abstract]      
Net sales $ 0   $ 22,744
Income (Loss) on operations before taxes on income 0   251
Tax expense (benefit) 0   88
Income (Loss) on operations, net of tax $ 0 $ 163 $ 163