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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, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 03, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Quarterly Financial Information [Line Items]                      
Net Sales $ 136,628 $ 262,413 $ 119,565 $ 94,505 $ 167,026 $ 302,791 $ 140,977 $ 95,809 $ 613,111 $ 706,603 $ 745,741
Gross profit 30,160 61,781 33,719 30,021 52,105 94,933 44,800 31,183 155,681 223,021 228,569
Income (loss) from operations (26,580) (7,746) (14,108) (15,724) (2,391) 34,413 (1,100) (13,816) (64,158) 17,106 30,530
Income (loss) before provision (benefit) for income taxes (29,771) (16,651) (16,371) (18,629) (5,844) 31,612 (3,441) (16,951) (81,422) 5,376 26,593
Net income (loss) $ (30,487) $ (17,569) $ (16,687) $ (18,825) $ (7,752) $ 30,529 $ (4,145) $ (17,383) $ (83,085) $ 1,243 $ 23,254
Basic earnings (loss) per share $ (1.33) $ (0.77) $ (0.77) $ (1.01) $ (0.47) $ 1.91 $ (0.27) $ (1.01) $ (3.89) $ 0.08 $ 1.20
Weighted average shares outstanding 22,799 22,772 21,616 18,104 16,098 16,044 16,402 17,218 21,341 16,542 19,435
Diluted earnings (loss) per share $ (1.33) $ (0.77) $ (0.77) $ (1.01) $ (0.47) $ 0.82 $ (0.27) $ (1.01) $ (3.89) $ 0.07 $ 0.71
Weighted average shares and equivalents outstanding 22,799 22,772 21,616 18,104 16,098 39,504 16,402 17,218 21,341 16,665 43,321