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Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information [Line Items]                      
Net Sales $ 167,026 $ 302,791 $ 140,977 $ 95,809 $ 163,407 $ 337,027 $ 131,106 $ 114,201 $ 706,603 $ 745,741 $ 810,060
Gross profit 52,105 94,933 44,800 31,183 49,575 104,329 39,287 35,378 223,021 228,569 235,807
Income (loss) from operations (2,391) 34,413 (1,100) (13,816) (6,891) 44,628 (3,008) (4,199) 17,106 30,530 31,327
Income (loss) before provision (benefit) for income taxes (5,844) 31,612 (3,441) (16,951) (9,078) 47,239 (4,414) (7,154) 5,376 26,593 25,224
Net income (loss) $ (7,752) $ 30,529 $ (4,145) $ (17,383) $ (9,386) $ 45,864 $ (5,727) $ (7,581) $ 1,243 $ 23,254 $ 21,509
Basic earnings (loss) per share $ (0.47) $ 1.91 $ (0.27) $ (1.01) $ (0.50) $ 2.47 $ (0.30) $ (0.40) $ 0.08 $ 1.20 $ 1.03
Weighted average shares outstanding 16,098 16,044 16,402 17,218 18,781 18,559 19,108 19,090 16,542 19,435 20,948
Diluted earnings (loss) per share $ (0.47) $ 0.82 $ (0.27) $ (1.01) $ (0.50) $ 1.12 $ (0.30) $ (0.40) $ 0.07 $ 0.71 $ 0.70
Weighted average shares and equivalents outstanding 16,098 39,504 16,402 17,218 18,781 42,562 19,108 19,090 16,665 43,321 41,516