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Acquisition - Pro Forma Consolidated Operating Results (Detail) (La Barge, USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
La Barge
 
Business Acquisition, Pro Forma Information [Line Items]  
Net sales $ 744,366
Net loss $ (39,737)
Basic loss per share (in dollars per share) $ (3.77)
Diluted loss per share (in dollars per share) $ (3.77)