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Quarterly Results for Continuing Operations - Quarterly Information for the Applicable Time Periods (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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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
Quarterly information for the applicable time periods |  |  |  |  |  |  |  |  |  |
Net sales | $ 9,397 | $ 8,673 | $ 11,444 | $ 8,298 | $ 7,690 | $ 13,780 | $ 12,302 | $ 15,311 | $ 37,812 | $ 49,083
Gross Profit (Loss) | 150 | (451) | 1,226 | 91 | (298) | 2,561 | 2,044 | 2,283 | 1,016 | 6,590
Net income (loss) | $ (1,704) | $ (2,624) | $ 151 | $ (2,883) | $ (3,618) | $ 204 | $ 547 | $ 274 | $ (7,060) | $ (2,593)
Earnings (loss) per share: |  |  |  |  |  |  |  |  |  |
Basic | $ (0.21) | $ (0.33) | $ 0.01 | $ (0.36) | $ (0.45) | $ 0.01 | $ 0.06 | $ 0.02 | $ (0.89) | $ (0.36)

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