| In millions, except per share items | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 | Jan-01-11 |
| Revenues | 46.5 | 42.1 | 39.9 | 30.3 | 34.5 | 33.9 | 29.1 | 30.9 |
| Revenue growth | 10.5% | 5.5% | 31.6% | -12.1% | 1.9% | 16.4% | -5.8% | -5.2% |
| Cost of goods sold | 13.6 | 13.8 | 10.7 | 9.4 | 22.2 | 39.5 | 38.9 | 44.8 |
| Gross profit | 33.0 | 28.3 | 29.2 | 20.9 | 12.3 | -5.7 | -9.8 | -13.9 |
| Gross margin | 70.9% | 67.2% | 73.3% | 69.0% | 35.5% | -16.8% | -33.6% | -44.9% |
| Selling, general and administrative | | | | | | | | |
| Sales and marketing | 13.4 | 16.8 | 13.8 | 9.1 | 10.6 | | | |
| Research and development | 13.3 | 12.5 | 13.9 | 12.5 | 11.1 | | | |
| General and administrative | 12.2 | 11.8 | 11.7 | 9.1 | 8.8 | 8.3 | 9.1 | 10.1 |
| EBITA | -12.2 | -18.8 | -15.1 | -12.9 | -10.5 | -14.0 | -16.7 | -17.3 |
| EBITA margin | -26.3% | -44.7% | -37.7% | -42.5% | -30.5% | -41.4% | -57.5% | -55.9% |
| Amortization of intangibles | | | | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 |
| EBIT | -12.2 | -18.8 | -15.1 | -13.0 | -10.6 | -14.1 | -16.9 | -17.4 |
| EBIT margin | -26.3% | -44.7% | -37.7% | -42.9% | -30.7% | -41.6% | -58.1% | -56.3% |
| Pre-tax income | -16.4 | -20.9 | -15.6 | -14.2 | -11.4 | -15.4 | -16.4 | -18.0 |
| Income taxes | -0.1 | 0.1 | 0.0 | 0.0 | -0.2 | 0.0 | -5.9 | -1.7 |
| Tax rate | 0.6% | | | | 2.1% | | 35.8% | 9.5% |
| Earnings from continuing ops | -16.9 | -21.6 | -16.3 | -14.8 | -11.8 | -16.1 | -18.4 | -17.6 |
| Earnings from discontinued ops | | | | | | 0.2 | 28.9 | 3.0 |
| Net income | -16.9 | -21.6 | -16.3 | -14.8 | -11.8 | -15.9 | 10.6 | -14.6 |
| Net margin | -36.3% | -51.2% | -40.8% | -48.9% | -34.1% | -46.9% | 36.3% | -47.2% |
| |
| Diluted EPS | ($0.56) | ($0.86) | ($0.70) | ($0.74) | ($0.70) | ($1.01) | ($1.29) | ($1.28) |
| Shares outstanding (diluted) | 30.5 | 25.2 | 23.3 | 19.9 | 16.7 | 16.0 | 14.2 | 13.7 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |