v2.4.0.6

Quarterly Financial Data (Detail) (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
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 900,647 | $ 879,939 | $ 755,446 | $ 673,750 | $ 781,969 | $ 729,861 | $ 607,921 | $ 537,198 | $ 3,209,782 | $ 2,656,949 | $ 1,991,139
Gross Profit | 253,800 | 259,785 | 216,749 | 194,963 | 204,308 | 206,836 | 177,604 | 151,835 | 925,297 | 740,583 | 530,213
Net Income | $ 88,064 | $ 94,345 | $ 69,823 | $ 60,078 | $ 63,899 | $ 67,637 | $ 48,729 | $ 47,310 | $ 312,310 | $ 227,575 | $ 147,138
Diluted Net Income per Share | $ 1.24 | $ 1.33 | $ 0.98 | $ 0.85 | $ 0.90 | $ 0.95 | $ 0.68 | $ 0.67 | $ 4.40 | $ 3.20 | $ 2.14

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