| In millions, except per share items | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 |
| | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | 10-K | 10-K |
| Revenues | 0.9 | 0.5 | 4.9 | 2.4 | 4.0 | 0.5 | 0.2 | 0.1 |
| Revenue growth | 80.9% | -90.0% | 99.3% | -39.1% | 690.8% | 116.7% | 327.2% | -66.9% |
| Cost of goods sold | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Gross profit | 0.9 | 0.5 | 4.6 | 2.4 | 4.0 | 0.5 | 0.2 | 0.1 |
| Gross margin | 100.0% | 100.0% | 93.9% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Selling, general and administrative [+] | 2.3 | 3.4 | 3.1 | 3.7 | 4.1 | 4.9 | 5.2 | 8.6 |
| General and administrative | 2.3 | 3.4 | 3.1 | 3.7 | 4.1 | 4.9 | 5.2 | 8.6 |
| Other operating expenses [+] | 1.4 | 1.1 | 2.4 | 4.0 | 4.6 | 5.6 | 5.8 | 4.9 |
| Exploration expenses | 0.2 | 0.2 | 0.2 | 0.5 | 1.0 | 4.0 | 4.6 | 4.6 |
| EBITDA [+] | | | 0.3 | -3.9 | -3.3 | -8.6 | -9.6 | -13.1 |
| EBITDA growth | -29.9% | -1345.1% | -108.3% | 18.1% | -61.4% | -10.7% | -26.3% | 30.6% |
| EBITDA margin | -322.3% | -831.9% | 6.7% | -160.4% | -82.7% | -1695.5% | -4114.6% | -23864.1% |
| Depreciation and amortization | | | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 0.3 |
| EBIT [+] | -2.8 | -4.0 | -1.0 | -5.2 | -4.7 | -9.9 | -10.8 | -13.4 |
| EBIT growth | -29.9% | 324.2% | -81.8% | 12.2% | -52.9% | -8.2% | -19.4% | 30.1% |
| EBIT margin | -322.3% | -831.9% | -19.6% | -214.3% | -116.3% | -1954.2% | -4611.7% | -24443.4% |
| Non-recurring items [+] | | | 1.0 | | -0.1 | | | 0.0 |
| Asset impairment | | | 1.0 | | | | | |
| Loss (gain) on sale of assets | | | | | -0.1 | | | 0.0 |
| Interest expense | 1.8 | 2.2 | 2.3 | 9.9 | 6.3 | 4.6 | 1.7 | 0.5 |
| Interest expense | 1.8 | 2.2 | 2.3 | 9.9 | 6.3 | 4.6 | 1.7 | 0.5 |
| Other income (expense), net [+] | 1.4 | 0.3 | 1.0 | 0.3 | 3.3 | 4.7 | 2.2 | 0.8 |
| Unrealized gain/loss on derivatives | | | 0.5 | 0.2 | | | 0.8 | 1.0 |
| Other | 1.4 | 0.3 | 0.5 | 0.0 | 0.0 | -0.6 | -0.3 | 0.0 |
| Pre-tax income | -3.3 | -6.0 | -3.3 | -14.9 | -7.6 | -9.8 | -10.3 | -13.1 |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tax rate | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Net income | -3.4 | -6.0 | -3.3 | -14.9 | -7.6 | -9.8 | -10.3 | -13.1 |
| Net margin | -383.3% | -1228.9% | -68.3% | -609.9% | -190.4% | -1932.1% | -4404.5% | -23827.7% |
| |
| Basic EPS [+] | ($0.02) | ($0.03) | ($0.02) | ($0.13) | ($0.07) | ($0.10) | ($0.11) | ($0.14) |
| Growth | -43.9% | 68.5% | -83.9% | 69.2% | -27.4% | -6.1% | -21.5% | 27.5% |
| Diluted EPS [+] | ($0.02) | ($0.03) | ($0.02) | ($0.13) | ($0.07) | ($0.10) | ($0.11) | ($0.14) |
| Growth | -43.9% | 68.5% | -83.9% | 69.2% | -27.4% | -6.1% | -21.5% | 27.5% |
| |
| Shares outstanding (basic) [+] | 176.6 | 175.5 | 164.7 | 119.0 | 103.1 | 96.0 | 94.9 | 94.3 |
| Growth | 0.6% | 6.6% | 38.4% | 15.4% | 7.4% | 1.2% | 0.6% | 5.3% |
| Shares outstanding (diluted) [+] | 176.6 | 175.5 | 164.7 | 119.0 | 103.1 | 96.0 | 94.9 | 94.3 |
| Growth | 0.6% | 6.6% | 38.4% | 15.4% | 7.4% | 1.2% | 0.6% | 5.3% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |