Supplementary Financial Information to Item 8. (Details) - 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 |
|
| Quarterly Financial Information Disclosure [Abstract] | |||||||||||
| Net sales from continuing operations | $ 17,249 | $ 18,335 | $ 16,232 | $ 12,587 | $ 8,844 | $ 7,304 | $ 4,456 | $ 2,096 | $ 64,403 | $ 22,700 | $ 9,423 |
| Gross profit from continuing operations | 7,571 | 9,130 | 7,440 | 5,151 | 3,190 | 2,495 | 1,499 | 594 | 29,292 | 7,778 | 2,078 |
| Net income from continuing operations | 1,657 | 4,398 | 2,192 | 1,224 | (65) | 256 | (384) | (4,053) | 9,471 | (4,246) | (5,907) |
| (Loss) income from discontinued operations | (373) | (142) | (81) | (95) | (685) | (659) | (238) | (17) | (691) | (1,599) | 3,546 |
| Net income (loss) | $ 1,284 | $ 4,256 | $ 2,111 | $ 1,129 | $ (750) | $ (403) | $ (622) | $ (4,070) | $ 8,780 | $ (5,845) | $ (2,361) |
| Net income per share (basic): | |||||||||||
| Net income (loss) from continuing operations (in dollars per share) | $ 0.14 | $ 0.42 | $ 0.22 | $ 0.13 | $ 0.91 | $ (0.55) | $ (1.24) | ||||
| Net (loss) income from discontinued operations (in dollars per share) | (0.03) | (0.01) | (0.01) | (0.01) | (0.07) | (0.20) | 0.74 | ||||
| Net income (loss) (in dollars per share) | 0.11 | 0.41 | 0.21 | 0.12 | 0.84 | (0.75) | (0.50) | ||||
| Income (loss) from continuing operations | |||||||||||
| Net income (loss) from continuing operations (in dollars per share) | 0.14 | 0.41 | 0.22 | 0.12 | 0.88 | (0.55) | (1.24) | ||||
| Net (loss) income from discontinued operations (in dollars per share) | (0.03) | (0.01) | (0.01) | (0.01) | (0.06) | (0.20) | 0.74 | ||||
| Net income (loss) (in dollars per share) | $ 0.11 | $ 0.40 | $ 0.21 | $ 0.11 | $ 0.82 | $ (0.75) | $ (0.50) | ||||
| Net (loss) income per share (basic and diluted): | |||||||||||
| Net (loss) income from continuing operations (in dollars per share) | $ (0.01) | $ 0.03 | $ (0.05) | $ (0.79) | |||||||
| Net loss from discontinued operations (in dollars per share) | (0.07) | (0.08) | (0.03) | 0.00 | |||||||
| Net loss (in dollars per share) | $ (0.08) | $ (0.05) | $ (0.08) | $ (0.79) | |||||||