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Unaudited Pro forma Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 28, 2014
Mar. 29, 2013
Business Combination, Pro Forma Information [Line Items]    
Sales $ 90,164 $ 86,846
Income from continuing operations $ 3,237 $ 978
Earnings per share-Basic $ 0.09 $ 0.03
Earnings per share-Diluted $ 0.09 $ 0.03