Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Consolidated Results of Operation of Company with Acquired Business (Detail)

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Acquisitions - Consolidated Results of Operation of Company with Acquired Business (Detail) (Peco, Inc [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 29, 2014
Mar. 30, 2013
As Reported [Member]
Mar. 30, 2013
Pro Forma [Member]
Business Acquisition [Line Items]      
Sales $ 140,951 $ 73,967 $ 94,911
Net income $ 7,507 $ 8,564 $ 9,156
Basic earnings per share $ 0.42 $ 0.49 $ 0.53
Diluted earnings per share $ 0.40 $ 0.47 $ 0.50