Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Peco, Inc [Member]
   
Business Acquisition [Line Items]    
Sales $ 386,170 $ 344,233
Net income $ 29,456 $ 24,348
Basic earnings per share $ 1.68 $ 1.42
Diluted earnings per share $ 1.60 $ 1.34