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Quarterly Financial Information - Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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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

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