Annual report pursuant to Section 13 and 15(d)

Summary Of Quarterly Financial Information - Summary of Unaudited Financial Data (Detail)

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Summary Of Quarterly Financial Information - Summary of Unaudited 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
Condensed Unaudited Quarterly Financial Data [Line Items]                      
Net sales $ 395,617 $ 429,429 $ 384,001 $ 351,274 $ 283,248 $ 412,183 $ 434,351 $ 476,234 $ 1,560,321 $ 1,606,016 $ 2,006,868
Gross profit 168,464 187,824 171,342 155,696 112,613 175,195 143,330 192,610 683,326 623,748 911,906
Net earnings (loss) 3,956 11,004 (1,782) (3,666) (57,661) 8,285 (29,916) 11,808 9,512 (67,484) 136,148
Net earnings (loss) per share, Basic $ 0.08 $ 0.22 $ (0.04) $ (0.07) $ (1.18) $ 0.17 $ (0.62) $ 0.24 $ 0.19 $ (1.39) $ 2.87
Net earnings (loss) per share, Diluted $ 0.08 $ 0.22 $ (0.04) $ (0.07) $ (1.18) $ 0.17 $ (0.62) $ 0.24 $ 0.19 $ (1.39) $ 2.78
Impairment of property, plant and equipment         1,500       0 1,481 0
Impairment of intangible assets         $ 1,600       $ 0 $ 1,649 $ 0