SUPPLEMENTAL UNAUDITED QUARTERLY FINANCIAL INFORMATION (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 Data [Abstract] | |||||||||||
| Sales | $ 9,494 | $ 10,063 | $ 9,295 | $ 7,775 | $ 8,295 | $ 7,823 | $ 7,274 | $ 6,128 | $ 36,627 | $ 29,520 | $ 27,681 |
| Gross profit | 4,830 | 5,062 | 4,700 | 3,323 | 3,514 | 3,229 | 3,140 | 2,674 | 17,915 | 12,557 | 8,992 |
| Net income (loss) attributable to common shareholders | $ (523) | $ (964) | $ (519) | $ (1,944) | $ (1,410) | $ (1,587) | $ (1,497) | $ 12,858 | $ (3,950) | $ 8,364 | $ (18,214) |
| Income (loss) per basic share (in dollars per share) | $ (0.02) | $ (0.04) | $ (0.02) | $ (0.07) | $ (0.05) | $ (0.06) | $ (0.06) | $ 0.69 | $ (0.14) | $ 0.34 | $ (1.03) |