| 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 | 10-K |
| Revenues: |
| GRE | 304.0 | 311.8 | 304.5 | 286.6 | 274.4 | 262.3 | 212.1 | 213.1 |
| Other | 11.6 | 11.4 | 52.5 | 28.7 | | 1.9 | | |
| Total revenues [+] | 315.5 | 323.3 | 356.9 | 315.3 | 0.2 | 264.2 | 212.1 | 213.1 |
| Other | | | | | 5.9 | 1.9 | 1.6 | 2.0 |
| Revenue growth [+] | -2.4% | -9.4% | 13.2% | 185365.3% | -99.9% | 24.6% | -0.4% | -24.2% |
| GRE | -2.5% | 2.4% | 6.2% | 4.4% | 4.6% | 23.7% | -0.4% | -24.2% |
| Cost of goods sold | 160.8 | 231.6 | 261.9 | 232.4 | 203.8 | 178.7 | 135.2 | 146.4 |
| Gross profit | 154.8 | 91.6 | 95.1 | 82.9 | -203.6 | 85.5 | 76.9 | 66.6 |
| Gross margin | 49.1% | 28.3% | 26.6% | 26.3% | -119760.0% | 32.4% | 36.3% | 31.3% |
| Selling, general and administrative | 75.0 | 67.5 | 71.8 | 72.7 | 61.5 | 80.1 | 61.6 | 66.0 |
| Research and development | | | | | 0.0 | | -0.3 | 2.0 |
| Equity in earnings | | | | -4.8 | -3.4 | -0.6 | 0.2 | 0.4 |
| Other operating expenses [+] | | -8.5 | | | -279.9 | 11.4 | 46.2 | 7.0 |
| Exploration expenses | | | | | 0.2 | 4.9 | 6.1 | 6.6 |
| EBITDA [+] | 80.2 | 33.0 | 26.2 | 9.0 | 13.4 | -4.4 | -29.7 | -7.5 |
| EBITDA growth | 143.2% | 25.7% | 190.7% | -32.4% | -403.5% | -85.2% | 295.9% | -69.3% |
| EBITDA margin | 25.4% | 10.2% | 7.3% | 2.9% | 7854.1% | -1.7% | -14.0% | -3.5% |
| Depreciation | 0.0 | 0.0 | 0.5 | 1.1 | 0.8 | 0.8 | 0.4 | 0.4 |
| EBITA | 80.2 | 32.9 | 25.8 | 7.9 | 12.6 | -5.2 | -30.1 | -7.9 |
| EBITA margin | 25.4% | 10.2% | 7.2% | 2.5% | 7405.9% | -2.0% | -14.2% | -3.7% |
| Amortization of intangibles | 0.4 | 0.4 | 2.5 | 2.5 | 1.3 | 1.3 | 0.2 | |
| EBIT [+] | 79.8 | 32.5 | 23.3 | 5.4 | 11.3 | -6.5 | -30.3 | -7.9 |
| EBIT growth | 145.3% | 39.8% | 331.3% | -52.2% | -272.6% | -78.4% | 281.9% | -67.8% |
| EBIT margin | 25.3% | 10.1% | 6.5% | 1.7% | 6641.2% | -2.5% | -14.3% | -3.7% |
| Non-recurring items [+] | 2.1 | 8.5 | 1.4 | 0.4 | 2.7 | | | |
| Asset impairment | 2.1 | | 1.4 | 0.4 | 2.7 | | | |
| Interest income, net [+] | 0.7 | -0.4 | -0.1 | -0.1 | 0.2 | 0.0 | 0.3 | 0.4 |
| Interest expense | 0.1 | 0.4 | 0.3 | 0.5 | 0.4 | 0.3 | 0.0 | 0.0 |
| Interest income | 0.8 | 0.0 | 0.2 | 0.4 | 0.6 | 0.3 | 0.3 | 0.4 |
| Other income (expense), net [+] | -0.9 | 0.0 | 0.7 | 1.1 | 0.3 | -0.4 | 0.0 | -0.6 |
| Gain (loss) on acquisitions / transactions | | | | | | | -1.3 | |
| Other | -0.5 | 0.7 | 0.4 | 1.1 | 0.2 | -0.4 | 0.2 | -0.2 |
| Pre-tax income | 77.5 | 23.7 | 22.4 | 6.0 | 9.0 | -6.9 | -30.0 | -8.1 |
| Income taxes | 21.0 | 7.5 | 7.6 | 4.6 | -12.4 | 1.7 | 2.2 | 0.5 |
| Tax rate | 27.1% | 31.8% | 34.0% | 76.9% | | | | |
| Minority interest | -0.9 | -1.4 | 2.4 | -2.8 | -1.4 | -1.7 | -7.7 | -1.2 |
| Earnings from continuing ops | 55.4 | 15.8 | 10.9 | 2.7 | 21.3 | -8.5 | -26.0 | -8.9 |
| Earnings from discontinued ops | 30.4 | 11.7 | 0.8 | | | | | |
| Net income | 85.9 | 27.5 | 11.7 | 2.7 | 21.3 | -8.5 | -26.0 | -8.9 |
| Net margin | 27.2% | 8.5% | 3.3% | 0.9% | 12531.8% | -3.2% | -12.3% | -4.2% |
| |
| Basic EPS [+] | $2.16 | $0.61 | $0.42 | $0.10 | $0.85 | ($0.36) | ($1.14) | ($0.40) |
| Growth | 253.5% | 46.2% | 313.2% | -88.0% | -335.2% | -68.4% | 182.4% | -69.2% |
| Diluted EPS [+] | $2.10 | $0.60 | $0.41 | $0.10 | $0.83 | ($0.36) | ($1.14) | ($0.40) |
| Growth | 249.4% | 47.7% | 315.3% | -88.2% | -330.2% | -68.4% | 182.4% | -69.2% |
| |
| Dividends per share [+] | $0.30 | $0.06 | $0.33 | $0.30 | $0.30 | $0.30 | $0.24 | $0.12 |
| Growth | 424.6% | -82.7% | 10.0% | 0.0% | 0.0% | 25.0% | 100.0% | 100.0% |
| |
| Shares outstanding (basic) [+] | 25.6 | 25.9 | 26.1 | 26.6 | 25.2 | 23.5 | 22.8 | 22.1 |
| Growth | -1.0% | -0.9% | -1.9% | 5.8% | 6.9% | 3.2% | 3.0% | 4.1% |
| Shares outstanding (diluted) [+] | 26.4 | 26.3 | 26.8 | 27.5 | 25.7 | 23.5 | 22.8 | 22.1 |
| Growth | 0.2% | -1.9% | -2.4% | 6.9% | 9.2% | 3.2% | 3.0% | 4.1% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |