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Quarterly Financial Information - Quarterly Results of Operations (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
Selected Quarterly Financial Information [Abstract]                      
Net sales $ 91,961 $ 89,046 $ 87,869 $ 85,790 $ 96,179 $ 102,100 $ 99,981 $ 89,925 $ 354,666 $ 388,185 $ 409,776
Gross profit 26,089 26,159 26,444 24,760 29,848 32,455 31,197 27,448 103,452 120,948 130,901
Income (loss) before income taxes 5,158 2,141 4,466 (59) 4,373 5,294 7,606 4,137 11,706 21,410 31,794
Net income (loss) $ 3,045 $ 206 $ 3,680 $ (256) $ 2,488 $ 2,555 $ 5,080 $ 2,738 $ 6,675 $ 12,861 $ 20,587
Net income, basic $ 0.58 $ 0.04 $ 0.68 $ (0.05) $ 0.46 $ 0.48 $ 0.94 $ 0.51 $ 1.25 $ 2.39 $ 3.84
Net income, diluted $ 0.58 $ 0.04 $ 0.68 $ (0.05) $ 0.46 $ 0.48 $ 0.94 $ 0.50 $ 1.24 $ 2.39 $ 3.77