| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K |
| Total revenues | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.8 | 0.8 | 0.8 |
| Revenue growth | 109.9% | 0.0% | 3.1% | -20.3% | -84.5% | 3.5% | -6.8% | -44.9% |
| Cost of goods sold | 0.4 | 0.4 | 0.5 | 0.1 | 0.1 | 0.0 | 0.0 | 0.6 |
| Gross profit | -0.2 | -0.3 | -0.4 | 0.0 | 0.0 | 0.8 | 0.8 | 0.2 |
| Gross margin | -76.4% | -332.7% | -363.4% | 0.0% | 0.0% | 100.0% | 100.0% | 24.8% |
| Selling, general and administrative [+] | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.6 |
| Sales and marketing | | | | | 0.1 | | | |
| General and administrative [+] | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.6 |
| General and administrative expenses | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.6 |
| Other selling, general and administrative | | | | | 0.1 | | | |
| Other operating expenses [+] | -0.3 | -0.4 | -0.4 | -2.3 | -0.1 | 1.0 | 1.2 | 1.2 |
| Exploration expenses | | | | | | 1.0 | 1.2 | 1.8 |
| EBITDA [+] | -0.2 | -0.3 | -0.4 | 1.9 | -0.3 | -0.3 | -0.1 | -0.9 |
| EBITDA growth | -53.6% | -9.0% | -118.5% | -862.7% | -22.2% | 208.6% | -87.8% | 89.9% |
| EBITDA margin | -70.8% | -319.8% | -351.5% | 1961.2% | -204.9% | -41.0% | -13.7% | -105.4% |
| Depreciation and amortization | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.7 | 0.7 |
| EBIT [+] | -0.2 | -0.3 | -0.4 | 1.9 | -0.3 | -0.6 | -0.8 | -1.6 |
| EBIT growth | -51.8% | -8.4% | -119.3% | -745.4% | -54.2% | -16.3% | -51.5% | 33.5% |
| EBIT margin | -76.4% | -332.7% | -363.4% | 1942.9% | -239.8% | -81.4% | -100.7% | -193.3% |
| Non-recurring items [+] | | | | 2.3 | | 2.6 | | 2.7 |
| Asset impairment | | | | 2.3 | | 2.6 | | 2.7 |
| Interest expense, net [+] | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| Interest expense | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| Interest income | | | | | 0.0 | 0.0 | 0.0 | 0.0 |
| Other income (expense), net [+] | 0.3 | 0.4 | 0.3 | 0.5 | 0.0 | 0.0 | 0.8 | 1.4 |
| Other | 0.1 | 0.2 | 0.1 | 0.2 | 0.0 | 0.0 | -0.1 | 0.0 |
| Pre-tax income | 0.2 | 0.1 | -0.1 | 0.1 | -0.3 | -3.2 | 0.0 | -3.0 |
| 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% |
| Earnings from continuing ops | 0.2 | 0.1 | -0.1 | 0.1 | -0.3 | -3.2 | 0.0 | -3.0 |
| Earnings from discontinued ops | | | 2.0 | -2.4 | -0.2 | 0.0 | 0.0 | 0.3 |
| Net income | 0.2 | 0.1 | 1.9 | -2.4 | -0.5 | -3.2 | -3.2 | -2.6 |
| Net margin | 85.4% | 77.2% | 1897.0% | -2400.0% | -393.5% | -410.4% | -424.9% | -319.8% |
| |
| Basic EPS [+] | $0.04 | $15.20 | ($0.01) | $0.01 | ($0.11) | ($1.66) | $22.60 | ($1.52) |
| Growth | -99.8% | -150100.0% | -186.7% | -110.4% | -93.2% | -107.4% | -1589.5% | 174.5% |
| Diluted EPS [+] | $0.04 | $15.20 | ($0.01) | $0.01 | ($0.11) | ($1.66) | $22.60 | ($1.52) |
| Growth | -99.8% | -150100.0% | -186.7% | -110.4% | -93.2% | -107.4% | -1589.5% | 174.5% |
| |
| Shares outstanding (basic) [+] | 5.1 | 0.0 | 5.1 | 5.1 | 2.4 | 1.9 | 0.0 | 1.9 |
| Growth | 99900.0% | -99.9% | 0.0% | 117.6% | 21.1% | 99900.0% | -99.9% | 0.0% |
| Shares outstanding (diluted) [+] | 5.1 | 0.0 | 5.1 | 5.1 | 2.4 | 1.9 | 0.0 | 1.9 |
| Growth | 99900.0% | -99.9% | 0.0% | 117.6% | 21.1% | 99900.0% | -99.9% | 0.0% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |