v2.4.0.6

Quarterly Financial Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Summary of the unaudited quarterly financial information |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 258,000 | $ 269,152 | $ 264,730 | $ 280,466 | $ 248,297 | $ 319,356 | $ 309,469 | $ 303,351 | $ 1,072,348 | $ 1,180,474 | $ 910,222
Gross profit | 22,339 | 24,136 | 19,391 | 24,461 | 38,627 | 37,839 | 30,632 | 33,755 | 90,327 | 140,855 | 82,409
Net income (loss) | $ 5,520 | $ 5,527 | $ 2,370 | $ 6,694 | $ 16,295 | $ 13,721 | $ 9,461 | $ 10,654 | $ 19,811 | $ 50,131 | $ 15,290
Net income (loss) per common share - basic | $ 0.25 | $ 0.27 | $ 0.11 | $ 0.29 | $ 0.70 | $ 0.59 | $ 0.41 | $ 0.46 | $ 0.91 | $ 2.15 | $ 0.66
Net income (loss) per common share - diluted | $ 0.25 | $ 0.27 | $ 0.11 | $ 0.29 | $ 0.69 | $ 0.59 | $ 0.40 | $ 0.46 | $ 0.91 | $ 2.14 | $ 0.66

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