| 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 | 458.5 | 470.4 | 460.6 | 454.9 | 667.6 | 881.2 | 795.4 | 340.8 |
| Revenue growth | -2.5% | 2.1% | 1.3% | -31.9% | -24.2% | 10.8% | 133.4% | 338.0% |
| Cost of goods sold | 304.6 | 301.8 | 282.9 | 279.1 | 433.5 | 628.0 | 532.7 | 263.3 |
| Gross profit | 153.9 | 168.6 | 177.7 | 175.7 | 234.1 | 253.2 | 262.7 | 77.5 |
| Gross margin | 33.6% | 35.8% | 38.6% | 38.6% | 35.1% | 28.7% | 33.0% | 22.7% |
| Selling, general and administrative [+] | 239.2 | 217.5 | 187.2 | 193.1 | 311.8 | 402.4 | 309.3 | 121.5 |
| Sales and marketing | 84.1 | 72.1 | 49.9 | 48.1 | 117.5 | 154.5 | 144.1 | 51.4 |
| General and administrative | 155.1 | 145.4 | 137.2 | 144.9 | 194.3 | 247.9 | 165.2 | 70.2 |
| Other operating expenses | 1.5 | | 4.6 | 3.6 | 2.2 | 6.7 | | |
| Adjusted EBITDA | -80.8 | -39.2 | -5.6 | -11.9 | -63.5 | -144.7 | -43.6 | -42.9 |
| Adjusted EBITDA margin | -17.6% | -8.3% | -1.2% | -2.6% | -9.5% | -16.4% | -5.5% | -12.6% |
| Stock-based compensation | 6.1 | 9.7 | 8.5 | 9.0 | 16.3 | 11.3 | 3.0 | 1.1 |
| EBITDA [+] | -86.9 | -48.9 | -14.1 | -20.9 | -79.9 | -155.9 | -46.6 | -44.0 |
| EBITDA growth | 77.6% | 247.9% | -32.7% | -73.8% | -48.8% | 234.7% | 5.9% | 45.1% |
| EBITDA margin | -18.9% | -10.4% | -3.1% | -4.6% | -12.0% | -17.7% | -5.9% | -12.9% |
| Depreciation and amortization | 21.9 | 22.2 | 24.5 | 31.2 | 34.5 | 26.8 | 8.2 | 2.9 |
| EBIT [+] | -108.7 | -71.1 | -38.6 | -52.1 | -114.4 | -182.8 | -54.8 | -46.9 |
| EBIT growth | 52.9% | 84.4% | -26.0% | -54.5% | -37.4% | 233.5% | 16.9% | 52.3% |
| EBIT margin | -23.7% | -15.1% | -8.4% | -11.5% | -17.1% | -20.7% | -6.9% | -13.8% |
| Non-recurring items | | | | | | 6.0 | | |
| Interest expense, net [+] | 3.7 | 8.1 | 7.5 | 8.9 | 7.7 | 6.4 | 0.0 | 0.0 |
| Interest expense | 3.7 | 8.1 | 7.5 | 8.9 | 7.7 | 6.4 | | 0.0 |
| Interest income | | | | | | | 0.0 | |
| Other income (expense), net [+] | 2.7 | -9.1 | | | | -15.0 | | |
| Gain (loss) on debt retirement | 0.7 | -4.1 | | | | | | |
| Other | 2.0 | -5.0 | | | | -15.0 | | |
| Pre-tax income | -109.7 | -88.4 | -46.1 | -61.0 | -122.1 | -210.1 | -54.8 | -46.9 |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 |
| Tax rate | 0.0% | 0.0% | 0.1% | 0.1% | | | | |
| Earnings from continuing ops | -109.7 | -88.4 | -46.2 | -61.1 | -122.1 | -210.1 | -54.9 | -47.0 |
| Earnings from discontinued ops | | | | | | -210.1 | | |
| Net income | -109.7 | -88.4 | -46.2 | -61.1 | -122.1 | -210.1 | -54.9 | -47.0 |
| Net margin | -23.9% | -18.8% | -10.0% | -13.4% | -18.3% | -23.8% | -6.9% | -13.8% |
| |
| Basic EPS [+] | ($3.02) | ($3.97) | ($3.06) | ($4.67) | ($9.51) | ($24.62) | ($0.84) | ($0.92) |
| Growth | -23.9% | 29.6% | -34.4% | -50.9% | -61.4% | 2834.2% | -8.7% | 3.9% |
| Diluted EPS [+] | ($3.02) | ($3.97) | ($3.06) | ($4.67) | ($9.51) | ($24.62) | ($0.84) | ($0.92) |
| Growth | -23.9% | 29.6% | -34.4% | -50.9% | -61.4% | 2834.2% | -8.7% | 3.9% |
| |
| Shares outstanding (basic) [+] | 36.3 | 22.3 | 15.1 | 13.1 | 12.8 | 8.5 | 65.4 | 51.1 |
| Growth | 63.0% | 47.6% | 15.3% | 1.9% | 50.5% | -87.0% | 27.9% | 46.8% |
| Shares outstanding (diluted) [+] | 36.3 | 22.3 | 15.1 | 13.1 | 12.8 | 8.5 | 65.4 | 51.1 |
| Growth | 63.0% | 47.6% | 15.3% | 1.9% | 50.5% | -87.0% | 27.9% | 46.8% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |