| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| Revenues | 52.2 | 53.5 | 51.2 | 54.5 | 85.3 | 90.3 | 129.5 | 143.0 |
| Revenue growth | -2.4% | 4.4% | -6.0% | -36.1% | -5.6% | -30.3% | -9.4% | -17.6% |
| Cost of goods sold | 20.5 | 21.7 | 20.9 | 18.0 | 47.8 | 49.3 | 77.0 | 78.8 |
| Gross profit | 31.7 | 31.8 | 30.3 | 36.5 | 37.4 | 41.0 | 52.6 | 64.2 |
| Gross margin | 60.8% | 59.4% | 59.2% | 67.0% | 43.9% | 45.4% | 40.6% | 44.9% |
| Sales and marketing | 13.5 | 13.5 | 16.7 | 13.7 | 13.8 | 15.7 | 22.3 | 16.5 |
| Research and development | 14.4 | 16.1 | 21.0 | 17.9 | 15.4 | 18.1 | 28.4 | 31.1 |
| General and administrative | 9.8 | 9.3 | 12.8 | 13.0 | 10.9 | 13.6 | 21.8 | 18.5 |
| EBITA | -6.0 | -7.3 | -29.0 | -7.7 | -2.6 | -6.4 | -18.3 | -1.8 |
| EBITA margin | -11.5% | -13.7% | -56.6% | -14.1% | -3.1% | -7.0% | -14.1% | -1.2% |
| Amortization of intangibles | 2.1 | 4.5 | 5.3 | 6.3 | 0.8 | | | |
| EBIT | -8.1 | -11.8 | -34.3 | -14.0 | -3.4 | -6.4 | -18.3 | -1.8 |
| EBIT margin | -15.6% | -22.1% | -67.0% | -25.6% | -4.0% | -7.0% | -14.1% | -1.2% |
| Pre-tax income | -8.1 | -4.2 | -43.9 | -13.2 | -2.8 | -6.0 | -84.0 | -0.6 |
| Income taxes | 0.2 | 0.2 | -1.9 | -3.5 | -0.2 | 0.0 | 0.1 | 0.0 |
| Tax rate | | | 4.4% | 26.3% | 5.5% | | | |
| Earnings from continuing ops | -8.2 | -4.4 | -42.0 | -9.7 | -2.7 | -6.4 | -84.1 | -0.6 |
| Earnings from discontinued ops | | | 3.6 | 5.7 | | | | 27.3 |
| Net income | -8.2 | -4.4 | -38.4 | -4.0 | -2.7 | -6.4 | -84.1 | 26.7 |
| Net margin | -15.8% | -8.2% | -75.1% | -7.4% | -3.1% | -7.1% | -64.9% | 18.7% |
| |
| Diluted EPS | ($0.17) | ($0.09) | ($0.83) | ($0.19) | ($0.06) | ($0.13) | ($1.79) | ($0.01) |
| Shares outstanding (diluted) | 47.9 | 48.6 | 50.9 | 50.3 | 47.5 | 47.8 | 46.9 | 46.4 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |