| In millions, except per share items | Sep-30-20 | Jun-30-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 | Mar-31-19 | Dec-31-18 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Revenues | 115.4 | 90.7 | 133.4 | 174.1 | 163.3 | 155.5 | 141.5 | 171.2 |
| Revenue growth | -29.3% | -41.7% | -5.7% | 1.7% | 25.5% | 50.1% | 28.4% | 64.5% |
| Cost of goods sold | 52.0 | 51.4 | 54.1 | 208.8 | 57.0 | 51.9 | 41.2 | 138.8 |
| Gross profit | 63.4 | 39.3 | 79.3 | -34.7 | 106.3 | 103.7 | 100.3 | 32.4 |
| Gross margin | 55.0% | 43.3% | 59.4% | -19.9% | 65.1% | 66.7% | 70.9% | 18.9% |
| Selling, general and administrative [+] | 12.1 | 11.6 | 9.9 | 13.9 | 14.6 | 13.6 | 28.9 | 11.0 |
| General and administrative | 12.1 | 11.6 | 9.9 | 13.9 | 14.6 | 13.6 | 28.9 | 11.0 |
| Other operating expenses [+] | 87.8 | 71.1 | 76.7 | -69.8 | 87.5 | 79.9 | 66.5 | -26.2 |
| Exploration expenses | 11.8 | 9.1 | 13.3 | 10.3 | 16.6 | 15.2 | 16.8 | 13.3 |
| EBITDA [+] | | | | | | | | |
| Depreciation and amortization | | | | | | | | |
| EBIT [+] | -36.5 | -43.4 | -7.3 | 21.2 | 4.2 | 10.2 | 4.9 | 47.6 |
| EBIT growth | -976.3% | -526.5% | -250.7% | -55.4% | -80.3% | 12.0% | -66.6% | -1145.6% |
| EBIT margin | -31.7% | -47.8% | -5.5% | 12.2% | 2.6% | 6.5% | 3.4% | 27.8% |
| Non-recurring items [+] | -0.1 | -1.9 | 7.4 | 0.3 | -0.7 | 0.0 | 0.0 | 0.0 |
| Asset impairment | | | 6.8 | | | | | |
| Loss (gain) on sale of assets | -0.1 | -1.9 | 0.6 | 0.3 | -0.7 | 0.0 | 0.0 | 0.0 |
| Interest expense | 14.4 | 14.9 | 14.8 | 14.9 | 15.2 | 15.1 | 13.8 | 14.0 |
| Interest expense | 14.4 | 14.9 | 14.8 | 14.9 | 15.2 | 15.1 | 13.8 | 14.0 |
| Other income (expense), net [+] | -40.5 | -10.9 | 40.1 | 8.0 | 15.8 | 29.7 | -4.9 | 2.9 |
| Gain (loss) on derivative instruments | -40.5 | -10.9 | 40.1 | 8.0 | 15.8 | 29.7 | -4.9 | 2.9 |
| Other | 0.0 | 0.0 | 0.0 | 0.0 | | 0.0 | | |
| Pre-tax income | -91.4 | -67.3 | 10.6 | 14.0 | 5.5 | 24.8 | -13.9 | 36.5 |
| Income taxes | 0.8 | 1.5 | 7.8 | 0.0 | 1.2 | -2.7 | 0.2 | 0.0 |
| Tax rate | | | 73.3% | 0.2% | 22.4% | | | 0.0% |
| Earnings from continuing ops | -90.6 | -65.8 | 18.3 | 14.0 | 6.8 | 22.1 | -13.7 | 36.5 |
| Earnings from discontinued ops | -0.8 | -1.5 | -7.8 | 0.0 | -1.2 | 2.7 | -0.2 | 0.0 |
| Net income | -91.4 | -67.3 | 10.6 | 14.0 | 5.5 | 24.8 | -13.9 | 36.5 |
| Net margin | -79.2% | -74.2% | 7.9% | 8.1% | 3.4% | 15.9% | -9.8% | 21.3% |
| |
| Basic EPS [+] | ($2.51) | ($1.83) | $0.51 | $0.42 | $0.19 | $0.62 | ($0.54) | $1.82 |
| Growth | -1427.5% | -396.2% | -195.4% | -76.9% | -4.6% | -165.5% | 300.2% | -343.0% |
| Diluted EPS [+] | ($2.51) | ($1.83) | $0.17 | $0.14 | $0.06 | $0.21 | ($0.54) | $0.61 |
| Growth | -4083.6% | -991.0% | -131.8% | -76.9% | -4.5% | -121.8% | 300.2% | -344.2% |
| |
| |
| Shares outstanding (basic) [+] | 36.0 | 35.9 | 35.8 | 33.2 | 35.7 | 35.7 | 25.6 | 20.0 |
| Growth | 1.0% | 0.5% | 39.9% | 66.1% | 77.1% | 77.2% | 30.7% | 14.4% |
| Shares outstanding (diluted) [+] | 36.0 | 35.9 | 107.5 | 99.9 | 107.1 | 107.3 | 25.6 | 60.2 |
| Growth | -66.3% | -66.6% | 320.5% | 66.0% | 77.0% | 433.2% | 30.7% | 13.9% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |