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Supplementary Financial Information to Item 8. (Details) - USD ($) $ / shares in Units, $ 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 Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales from continuing operations | $ 7,186 | $ 8,261 | $ 7,126 | $ 8,425 | $ 17,249 | $ 18,335 | $ 16,232 | $ 12,587 | $ 30,998 | $ 64,403 | $ 22,700
Gross profit from continuing operations | (1,072) | 3,082 | 2,522 | 3,145 | 7,571 | 9,130 | 7,440 | 5,151 | 7,677 | 29,292 | 7,778
Net loss from continuing operations | (7,805) | (3,177) | (3,916) | (1,977) | 1,657 | 4,398 | 2,192 | 1,224 | (16,875) | 9,471 | (4,246)
Loss from discontinued operations | 0 | 0 | 0 | (12) | (373) | (142) | (81) | (95) | (12) | (691) | (1,599)
Net (loss) income | $ (7,805) | $ (3,177) | $ (3,916) | $ (1,989) | $ 1,284 | $ 4,256 | $ 2,111 | $ 1,129 | $ (16,887) | $ 8,780 | $ (5,845)
Denominator: |  |  |  |  |  |  |  |  |  |  |
Net (loss) income from continuing operations (in dollars per share) | $ (0.67) | $ (0.27) | $ (0.34) | $ (0.17) |  |  |  |  |  |  |
Net loss from discontinued operations (in dollars per share) | 0.00 | 0.00 | 0.00 | 0.00 |  |  |  |  |  |  |
Net loss (in dollars per share) | $ (0.67) | $ (0.27) | $ (0.34) | $ (0.17) |  |  |  |  |  |  |
Net (loss) income per share - basic: |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations (in dollars per share) |  |  |  |  | $ 0.14 | $ 0.42 | $ 0.22 | $ 0.13 | $ (1.45) | $ 0.91 | $ (0.55)
Net (loss) income from discontinued operations (in dollars per share) |  |  |  |  | (0.03) | (0.01) | (0.01) | (0.01) | 0.00 | (0.07) | (0.20)
Net income (loss) (in dollars per share) |  |  |  |  | 0.11 | 0.41 | 0.21 | 0.12 | (1.45) | 0.84 | (0.75)
Income (loss) from continuing operations |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations (in dollars per share) |  |  |  |  | 0.14 | 0.41 | 0.22 | 0.12 | (1.45) | 0.88 | (0.55)
Net (loss) income from discontinued operations (in dollars per share) |  |  |  |  | (0.03) | (0.01) | (0.01) | (0.01) | 0.00 | (0.06) | (0.20)
Net income (loss) (in dollars per share) |  |  |  |  | $ 0.11 | $ 0.40 | $ 0.21 | $ 0.11 | $ (1.45) | $ 0.82 | $ (0.75)

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