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Unaudited Pro forma Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 27, 2014
Jun. 28, 2013
Jun. 27, 2014
Jun. 28, 2013
Business Combination, Pro Forma Information [Line Items]        
Sales $ 96,905 $ 92,902 $ 187,069 $ 179,748
Income from continuing operations $ 3,825 $ 1,290 $ 7,062 $ 2,268
Earnings per share - Basic $ 0.11 $ 0.03 $ 0.20 $ 0.06
Earnings per share - Diluted $ 0.11 $ 0.03 $ 0.20 $ 0.06