| In millions, except per share items | Dec-31-18 | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 |
| | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Total revenues | 106.9 | 98.6 | 98.1 | 90.5 | 69.4 | 66.7 | 71.0 | 76.5 |
| Revenue growth | 54.1% | 47.7% | 38.2% | 18.2% | -12.1% | -13.5% | 20.8% | 36.4% |
| Cost of goods sold | 61.4 | 36.8 | 36.5 | 20.0 | 42.8 | 43.6 | 41.9 | 27.4 |
| Gross profit | 45.4 | 61.8 | 61.6 | 70.5 | 26.6 | 23.2 | 29.1 | 49.2 |
| Gross margin | 42.5% | 62.7% | 62.8% | 77.9% | 38.4% | 34.7% | 41.0% | 64.3% |
| Selling, general and administrative [+] | 9.8 | 10.4 | 10.4 | 12.5 | 20.3 | 13.1 | 2.0 | 7.9 |
| General and administrative [+] | 9.8 | 10.4 | 10.4 | 12.5 | 20.3 | 13.1 | 2.0 | 7.9 |
| General and administrative expenses | 6.9 | 6.1 | 6.3 | 8.5 | 17.1 | 10.0 | -1.4 | 4.4 |
| Operating taxes | 2.9 | 4.3 | 4.1 | 4.0 | 3.2 | 3.0 | 3.4 | 3.4 |
| Other selling, general and administrative | | | | | | | | |
| Equity in earnings | 0.0 | | | 0.2 | -5.2 | 0.4 | 0.3 | 0.3 |
| Other operating expenses | -30.1 | -0.4 | -1.1 | -107.0 | 56.1 | 1.7 | 0.3 | 16.2 |
| EBITDA [+] | 65.7 | 51.7 | 52.4 | 165.1 | -55.0 | 8.7 | 27.2 | 25.4 |
| EBITDA growth | -219.4% | 492.6% | 92.8% | 549.8% | -424.0% | -54.6% | -150.3% | -117.7% |
| EBITDA margin | 61.5% | 52.5% | 53.4% | 182.5% | -79.3% | 13.1% | 38.3% | 33.2% |
| Depreciation and amortization | 19.5 | 20.6 | 22.0 | 18.2 | 14.4 | 13.5 | 11.6 | 11.5 |
| EBIT [+] | 46.2 | 31.1 | 30.4 | 146.9 | -69.4 | -4.8 | 15.6 | 13.9 |
| EBIT growth | -166.6% | -750.0% | 95.4% | 956.6% | -1489.3% | -244.3% | -121.3% | -108.1% |
| EBIT margin | 43.3% | 31.6% | 31.0% | 162.4% | -100.1% | -7.2% | 21.9% | 18.2% |
| Interest expense | 7.9 | 9.0 | 7.8 | 9.2 | 32.9 | 32.9 | 22.5 | 20.0 |
| Interest expense | 7.9 | 9.0 | 7.8 | 9.2 | 32.9 | 32.9 | 22.5 | 20.0 |
| Other income (expense), net [+] | -21.4 | -18.4 | -14.8 | -353.3 | 14.4 | 19.2 | 128.7 | 15.3 |
| Gain (loss) on debt retirement | | | | | | | -0.1 | -6.3 |
| Gain (loss) on derivative instruments | | | | -0.6 | 1.8 | 0.9 | 6.5 | 15.5 |
| Change in fair value of warrants | 0.5 | -0.3 | 1.5 | 0.2 | 12.6 | 18.3 | 122.3 | 6.0 |
| Other | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Pre-tax income | 16.9 | 3.7 | 7.7 | -215.6 | -87.8 | -18.5 | 121.8 | 9.2 |
| Income taxes | 0.0 | 0.0 | 0.0 | -4.5 | -2.1 | 0.3 | 1.0 | 1.0 |
| Tax rate | 0.0% | 0.0% | 0.0% | 2.1% | 2.4% | | 0.8% | 11.1% |
| Net income | 16.9 | 3.7 | 7.7 | -211.0 | -85.8 | -18.8 | 120.8 | 8.2 |
| Net margin | 15.8% | 3.7% | 7.9% | -233.3% | -123.6% | -28.2% | 170.0% | 10.7% |
| |
| Basic EPS [+] | $0.78 | $0.17 | $0.36 | ($9.64) | ($4.03) | ($0.81) | $6.13 | $0.44 |
| Growth | -119.4% | -121.1% | -94.2% | -2302.4% | 116.9% | -129.6% | -202.4% | -193.6% |
| Diluted EPS [+] | $0.78 | $0.17 | $0.36 | ($9.64) | ($4.03) | ($0.81) | $6.07 | $0.44 |
| Growth | -119.4% | -121.1% | -94.1% | -2305.1% | 116.9% | -129.7% | -201.4% | -193.5% |
| |
| Shares outstanding (basic) [+] | 21.6 | 21.6 | 21.6 | 21.9 | 21.3 | 23.3 | 19.7 | 18.7 |
| Growth | 1.5% | -7.3% | 9.7% | 17.0% | 13.9% | 24.9% | 5.9% | -93.3% |
| Shares outstanding (diluted) [+] | 21.6 | 21.6 | 21.6 | 21.9 | 21.3 | 23.3 | 19.9 | 18.7 |
| Growth | 1.5% | -7.3% | 8.7% | 16.8% | 13.9% | 24.4% | 6.9% | -93.3% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |