Quarterly report pursuant to Section 13 or 15(d)

Business Acquisition Business Acquisition (Schedule of Pro Forma Information) (Details)

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Business Acquisition Business Acquisition (Schedule of Pro Forma Information) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Business Combinations [Abstract]        
Pro forma net sales $ 337,328 $ 296,518 $ 791,763 $ 671,424
Pro forma net income (loss) $ (3,675) $ (8,405) $ 21,691 $ 2,590
Earnings (loss) per share        
Pro forma earnings (loss) per share, basic $ (0.11) $ (0.24) $ 0.62 $ 0.08
Pro forma earnings (loss) per share, diluted $ (0.11) $ (0.24) $ 0.61 $ 0.07