| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Revenue growth | | -100.0% | | | | -100.0% | | |
| Cost of goods sold | 0.0 | 0.0 | -1.3 | 0.0 | 0.0 | 0.0 | -0.5 | 0.0 |
| Gross profit | 0.0 | 0.0 | 1.3 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 |
| Gross margin | | | -12948.5% | | | | -3139.4% | |
| Selling, general and administrative [+] | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| General and administrative [+] | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| General and administrative expenses | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Professional fees | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 |
| Insurance expense | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Other operating expenses [+] | 0.8 | 0.1 | 1.9 | 0.3 | 0.2 | 0.3 | 0.6 | 0.3 |
| Exploration expenses | 0.0 | | | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 |
| EBITDA [+] | | | | | | | | |
| Depreciation and amortization | | | | | | | | |
| EBIT [+] | -0.9 | -0.2 | -0.7 | -0.4 | -0.3 | -0.4 | -0.2 | -0.4 |
| EBIT growth | 437.1% | -75.6% | 80.4% | 22.8% | -22.1% | 57.4% | -32.1% | |
| EBIT margin | | | 6524.3% | | | | 1619.7% | |
| Interest income | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Interest income | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Other income (expense), net [+] | -0.9 | | 0.4 | 0.3 | 0.0 | -0.1 | 0.0 | 0.0 |
| Gain (loss) on investments | | | | | | | 0.0 | 0.0 |
| Unrealized gain (loss) on marketable securities | -1.0 | | 0.0 | 0.1 | | | | |
| Other non-operating income | | | | | | 0.0 | | 0.0 |
| Other | 0.1 | | | | | 0.0 | | 0.0 |
| Pre-tax income | -1.7 | -0.2 | -0.2 | -0.1 | -0.3 | -0.5 | -0.3 | -0.4 |
| 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 | -1.7 | -0.2 | -0.2 | -0.1 | -0.3 | -0.5 | -0.3 | -0.4 |
| Net margin | | | 2199.0% | | | | 1905.9% | |
| |
| Basic EPS [+] | ($0.02) | $0.00 | $0.00 | $0.00 | $0.00 | ($0.01) | $0.00 | $0.00 |
| Growth | 949.5% | -27.5% | 105.9% | -71.7% | -36.9% | 65.4% | -23.0% | |
| Diluted EPS [+] | ($0.02) | $0.00 | $0.00 | $0.00 | $0.00 | ($0.01) | $0.00 | $0.00 |
| Growth | 949.5% | -27.5% | 105.9% | -71.7% | -36.9% | 65.4% | -23.0% | |
| |
| Shares outstanding (basic) [+] | 99.8 | 95.7 | 95.7 | 93.6 | 85.4 | 79.9 | 74.8 | 74.7 |
| Growth | 4.4% | 0.0% | 2.2% | 9.6% | 6.9% | 6.8% | 0.1% | |
| Shares outstanding (diluted) [+] | 99.8 | 95.7 | 95.7 | 93.6 | 85.4 | 79.9 | 74.8 | 74.7 |
| Growth | 4.4% | 0.0% | 2.2% | 9.6% | 6.9% | 6.8% | 0.1% | |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |