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Summarized Quarterly Data (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 153,331 | $ 175,780 | $ 230,504 | $ 284,179 | $ 134,606 | $ 168,572 | $ 231,893 | $ 351,874 | $ 843,794 | $ 886,945 | $ 842,801
Gross profit | 51,068 | 77,602 | 101,697 | 127,266 | 36,916 | 65,307 | 90,806 | 164,897 | 357,633 | 357,926 | 314,758
Net income (loss) | (30,452) | (3,617) | 12,818 | 35,819 | (41,539) | (1,134) | 3,369 | 55,312 | 14,568 | 16,008 | (18,921)
Net income (loss) allocable to common shareholders | $ (30,452) | $ (3,617) | $ 12,818 | $ 35,819 | $ (41,539) | $ (1,134) | $ 3,369 | $ 55,312 | $ 14,568 | $ 16,008 | $ (22,253)
Earnings (loss) per common share |  |  |  |  |  |  |  |  |  |  |
Basic earnings (loss) per common share (usd per share) | $ (0.33) | $ (0.04) | $ 0.16 | $ 0.46 | $ 0.54 | $ (0.01) | $ 0.04 | $ 0.71 | $ 0.18 | $ 0.21 | $ (0.31)
Dilutive earnings (loss) per common share (usd per share) | $ (0.33) | $ (0.04) | $ 0.15 | $ 0.39 | $ 0.54 | $ (0.01) | $ 0.04 | $ 0.61 | $ 0.17 | $ 0.20 | $ (0.31)

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