| In millions, except per share items | Dec-31-19 | Dec-31-18 | 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 | 10-K | 10-K | 10-K |
| Total revenues | 143.4 | 156.5 | 181.2 | 192.9 | 153.6 | 147.6 | 132.3 | 105.9 |
| Revenue growth | -8.4% | -13.6% | -6.1% | 25.6% | 4.1% | 11.6% | 24.8% | 27.0% |
| Cost of goods sold | 52.3 | 64.6 | 59.8 | 69.1 | 51.8 | 41.8 | 32.8 | 25.2 |
| Gross profit | 91.1 | 91.9 | 121.3 | 123.8 | 101.8 | 105.8 | 99.5 | 80.8 |
| Gross margin | 63.5% | 58.7% | 67.0% | 64.2% | 66.3% | 71.7% | 75.2% | 76.2% |
| Selling, general and administrative [+] | 100.7 | 120.3 | 127.7 | 148.8 | 107.8 | 100.1 | 85.0 | 74.2 |
| Sales and marketing | 64.7 | 76.9 | 92.4 | 107.8 | 78.2 | 73.4 | 63.6 | 54.0 |
| General and administrative | 36.0 | 43.5 | 35.3 | 41.0 | 29.6 | 26.7 | 21.4 | 20.3 |
| Research and development | 18.1 | 20.8 | 21.0 | 32.3 | 26.4 | 21.6 | 16.2 | 16.6 |
| Other operating expenses | 14.0 | 15.7 | 13.0 | 22.0 | 20.5 | 13.2 | 8.7 | 11.9 |
| EBITDA [+] | -34.8 | -56.9 | -31.2 | -70.2 | -47.0 | -25.9 | -8.0 | -19.7 |
| EBITDA growth | -38.8% | 82.3% | -55.5% | 49.2% | 81.8% | 222.6% | -59.3% | 26.8% |
| EBITDA margin | -24.3% | -36.4% | -17.2% | -36.4% | -30.6% | -17.5% | -6.1% | -18.6% |
| Depreciation | 3.3 | 3.8 | 5.0 | 5.3 | 4.6 | 2.7 | 2.1 | 1.5 |
| EBITA | -38.1 | -60.7 | -36.2 | -75.5 | -51.6 | -28.5 | -10.1 | -21.2 |
| EBITA margin | -26.6% | -38.8% | -20.0% | -39.2% | -33.6% | -19.3% | -7.6% | -20.0% |
| Amortization of intangibles | 3.6 | 4.2 | 4.1 | 3.8 | 1.3 | 0.6 | 0.3 | 0.7 |
| EBIT [+] | -41.7 | -64.9 | -40.3 | -79.3 | -52.9 | -29.1 | -10.4 | -21.9 |
| EBIT growth | -35.8% | 60.9% | -49.1% | 49.9% | 81.5% | 181.1% | -52.6% | 19.8% |
| EBIT margin | -29.1% | -41.5% | -22.3% | -41.1% | -34.4% | -19.7% | -7.8% | -20.7% |
| Non-recurring items [+] | 0.8 | 3.3 | 1.5 | 15.7 | | | | |
| Legal settlement | | | | 4.7 | | | | |
| Interest expense, net [+] | 35.0 | 27.6 | 22.0 | 15.6 | 7.3 | 5.5 | 0.3 | 0.0 |
| Interest expense | 35.0 | 27.7 | 22.1 | 15.8 | 7.5 | 5.7 | 0.3 | 0.0 |
| Interest income | 0.0 | 0.0 | 0.1 | 0.2 | 0.2 | 0.2 | 0.1 | 0.0 |
| Other income (expense), net [+] | 8.0 | 16.4 | -3.1 | -43.5 | 0.5 | 2.1 | -5.4 | -13.4 |
| Litigation settlement | | | | | | | | 5.0 |
| Gain (loss) on debt retirement | -11.8 | -2.3 | -6.5 | | 5.1 | | | 0.4 |
| Unrealized gain/loss on derivatives | 17.7 | 12.1 | | -43.8 | | | | |
| Change in value of contingent liability | 1.7 | 7.1 | 2.9 | 2.5 | -0.1 | 7.9 | -8.5 | -13.7 |
| Other | 0.4 | -0.5 | 0.6 | -2.2 | 0.6 | -5.8 | 3.1 | 0.3 |
| Pre-tax income | -69.5 | -79.4 | -66.9 | -154.2 | -59.8 | -32.5 | -16.1 | -35.2 |
| Income taxes | -4.7 | 0.3 | -0.5 | 0.5 | -9.3 | -0.1 | 0.0 | 0.5 |
| Tax rate | 6.8% | | 0.7% | | 15.6% | 0.2% | 0.1% | |
| Net income | -64.8 | -79.7 | -66.4 | -154.7 | -50.4 | -32.4 | -16.1 | -35.8 |
| Net margin | -45.2% | -50.9% | -36.7% | -80.2% | -32.8% | -22.0% | -12.1% | -33.8% |
| |
| Basic EPS [+] | ($3.84) | ($9.07) | ($7.97) | ($19.10) | ($0.75) | ($0.50) | ($0.26) | ($0.60) |
| Growth | -57.6% | 13.8% | -58.3% | 2463.4% | 49.9% | 93.7% | -57.1% | 17.8% |
| Diluted EPS [+] | ($3.84) | ($9.07) | ($7.97) | ($19.10) | ($0.75) | ($0.50) | ($0.26) | ($0.60) |
| Growth | -57.6% | 13.8% | -58.3% | 2463.4% | 49.9% | 93.7% | -57.1% | 17.8% |
| |
| Shares outstanding (basic) [+] | 16.9 | 8.8 | 8.3 | 8.1 | 67.7 | 65.2 | 62.6 | 59.8 |
| Growth | 91.7% | 5.5% | 2.9% | -88.0% | 3.8% | 4.2% | 4.7% | 5.7% |
| Shares outstanding (diluted) [+] | 16.9 | 8.8 | 8.3 | 8.1 | 67.7 | 65.2 | 62.6 | 59.8 |
| Growth | 91.7% | 5.5% | 2.9% | -88.0% | 3.8% | 4.2% | 4.7% | 5.7% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |