| 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 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues: |
| United States | | | | | | | | 47.2 |
| Germany | | | | | | | | 13.8 |
| Other | | | | | | | | 5.9 |
| Total revenues [+] | 62.1 | 99.9 | 68.8 | 77.4 | 89.8 | 78.1 | 79.9 | 66.9 |
| Royalties | | | | | | | | 4.1 |
| Products | | | | | | | | 62.8 |
| Revenue growth [+] | -37.9% | 45.2% | -11.2% | -13.8% | 14.9% | -2.2% | 19.5% | 38.8% |
| United States | | | | | | | | 37.5% |
| Germany | | | | | | | | 9.9% |
| Rest of World | | | | | | | | 37.8% |
| Cost of goods sold | 38.8 | 34.2 | 35.0 | 40.7 | 41.3 | 49.3 | 53.2 | 45.1 |
| Gross profit | 23.2 | 65.7 | 33.7 | 36.7 | 48.5 | 28.8 | 26.7 | 21.8 |
| Gross margin | 37.4% | 65.8% | 49.0% | 47.4% | 54.0% | 36.9% | 33.4% | 32.6% |
| Selling, general and administrative [+] | 54.2 | 53.9 | 46.9 | 49.4 | 63.6 | 67.5 | 66.2 | 60.7 |
| Sales and marketing | 25.3 | 24.9 | 22.6 | 28.5 | 39.0 | 38.8 | 41.1 | 37.6 |
| General and administrative | 28.8 | 29.0 | 24.2 | 20.9 | 24.6 | 28.7 | 25.2 | 23.2 |
| Research and development | 15.3 | 14.8 | 11.9 | 12.5 | 16.9 | 17.1 | 16.6 | 17.0 |
| EBITDA [+] | -42.2 | 1.3 | -20.7 | -20.9 | -27.8 | -52.2 | -53.0 | -53.3 |
| EBITDA growth | -3439.6% | -106.1% | -0.7% | -25.0% | -46.6% | -1.5% | -0.7% | 23.1% |
| EBITDA margin | -68.1% | 1.3% | -30.2% | -27.0% | -31.0% | -66.8% | -66.3% | -79.7% |
| Depreciation and amortization | 4.0 | 4.3 | 4.4 | 4.2 | 4.1 | 3.7 | 3.2 | 2.6 |
| EBIT [+] | -46.3 | -3.0 | -25.1 | -25.1 | -32.0 | -55.8 | -56.1 | -56.0 |
| EBIT growth | 1438.5% | -88.0% | -0.1% | -21.4% | -42.8% | -0.5% | 0.3% | 23.2% |
| EBIT margin | -74.6% | -3.0% | -36.5% | -32.5% | -35.6% | -71.5% | -70.3% | -83.7% |
| Non-recurring items [+] | | | | | 6.7 | | | |
| Asset impairment | | | | | 6.7 | | | |
| Interest expense, net [+] | 2.0 | 3.4 | 2.3 | 2.6 | 2.7 | 1.6 | -0.3 | 1.2 |
| Interest expense | 2.0 | 3.5 | 2.4 | 2.9 | 3.4 | 2.1 | 0.1 | 1.4 |
| Interest income | 0.1 | 0.1 | 0.1 | 0.3 | 0.7 | 0.5 | 0.5 | 0.1 |
| Other income (expense), net [+] | -2.3 | 4.1 | 3.2 | -0.7 | -1.9 | 4.1 | -1.7 | 0.0 |
| Gain (loss) on debt retirement | | | | | | | | -0.2 |
| Gain (loss) on foreign currency transactions | -2.3 | -3.2 | 3.2 | -0.7 | -1.9 | 4.1 | -1.6 | |
| Other | | -7.3 | | | | | -0.1 | 0.2 |
| Pre-tax income | -50.5 | -2.3 | -24.3 | -28.4 | -43.3 | -53.4 | -57.5 | -57.2 |
| Income taxes | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 | 0.2 | 0.1 | 0.0 |
| Tax rate | 0.0% | | | | | | | |
| Net income | -50.5 | -2.4 | -24.3 | -28.5 | -43.4 | -53.6 | -57.6 | -57.2 |
| Net margin | -81.3% | -2.4% | -35.3% | -36.8% | -48.3% | -68.6% | -72.1% | -85.6% |
| |
| Basic EPS [+] | ($6.99) | ($0.36) | ($0.34) | ($0.44) | ($0.74) | ($1.24) | ($1.39) | ($2.60) |
| Growth | 1832.1% | 6.8% | -23.7% | -39.7% | -40.4% | -10.9% | -46.7% | -75.9% |
| Diluted EPS [+] | ($6.99) | ($0.36) | ($0.34) | ($0.44) | ($0.74) | ($1.24) | ($1.39) | ($2.60) |
| Growth | 1832.1% | 6.8% | -23.7% | -39.7% | -40.4% | -10.9% | -46.7% | -75.9% |
| |
| Shares outstanding (basic) [+] | 7.2 | 6.7 | 71.7 | 64.1 | 58.9 | 43.3 | 41.5 | 22.0 |
| Growth | 8.3% | -90.7% | 11.8% | 8.9% | 35.9% | 4.4% | 88.8% | 418.8% |
| Shares outstanding (diluted) [+] | 7.2 | 6.7 | 71.7 | 64.1 | 58.9 | 43.3 | 41.5 | 22.0 |
| Growth | 8.3% | -90.7% | 11.8% | 8.9% | 35.9% | 4.4% | 88.8% | 418.8% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |