| In millions, except per share items | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| REVENUES: | | | | | | |
| Revenues | 38.6 | 35.9 | 54.0 | 54.0 | 18.6 | 27.4 |
| Revenues growth | 7.4% | -33.5% | 0.0% | 191.0% | -32.2% | |
| Cost of revenues | | | | | | |
| Gross margin | 7.7 | 2.8 | 10.2 | 10.2 | 0.8 | |
| Gross margin | 19.9% | 7.9% | 18.9% | 18.9% | 4.3% | |
| |
| OPERATING EXPENSES: | | | | | | |
| Sales and marketing | 2.6 | 3.5 | 4.2 | 3.9 | 3.0 | 2.9 |
| Research and development | 1.9 | 2.6 | 3.4 | 4.8 | 4.2 | 4.3 |
| General and administrative | 4.0 | 6.4 | 8.5 | 9.0 | 6.9 | 7.1 |
| Gain on sale of assets | -1.5 | -1.0 | | | | |
| Total operating expenses | 15.5 | 24.6 | 16.1 | 17.7 | 15.0 | 16.4 |
| (Loss) income from operations | 0.6 | -9.0 | -5.9 | -7.5 | -14.2 | -9.7 |
| Operating margin | 1.7% | -25.0% | -10.9% | -13.8% | -76.5% | -35.2% |
| Interest expense | -0.1 | -0.1 | -0.2 | -0.3 | -0.5 | -0.1 |
| Other (expense) income | -0.5 | 0.3 | -0.2 | 0.0 | | |
| (Loss) income before provision for income taxes | 0.1 | -8.8 | | | | |
| Provision for income taxes | 0.0 | 0.2 | 1.6 | 1.0 | 0.0 | 1.0 |
| NET (LOSS) INCOME | 0.1 | -8.9 | -7.8 | -8.8 | -14.6 | -6.2 |
| |
| Other comprehensive (loss) income | | | | | | |
| Change in cumulative translation adjustment | 0.0 | 0.0 | 0.0 | | | 0.0 |
| COMPREHENSIVE (LOSS) INCOME | 0.1 | -9.0 | -7.8 | -8.8 | -14.6 | -6.2 |
| Net (loss) income applicable to common shareholders (Note3) | 0.1 | -8.9 | -7.8 | -8.8 | -18.3 | 0.0 |
| |
| Net (loss) income per common share | | | | | | |
| Basic and diluted (in dollars per share) | | ($0.39) | ($0.34) | ($0.44) | ($4.71) | ($821.92) |
| |
| Weighted average shares used in calculating: | | | | | | |
| Basic earnings per share (in shares) | 23.7 | 23.2 | 22.9 | 19.9 | 3.9 | 0.0 |
| Diluted earnings per share (in shares) | 23.7 | 23.2 | | | | |