| 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: |
| Coal, Hard Mineral Royalty and Other | | | | 178.9 | 202.3 | 210.1 | 154.1 | 266.1 |
| Soda Ash | 21.9 | 10.7 | 47.1 | 48.3 | 40.5 | 40.1 | 49.9 | 41.4 |
| Other | 172.4 | 118.3 | 163.3 | | 3.5 | 29.1 | 235.7 | 43.4 |
| Total revenues | 194.2 | 129.0 | 210.3 | 202.8 | 246.3 | 279.2 | 439.6 | 350.9 |
| Revenue growth [+] | 50.6% | -38.7% | 3.7% | -17.7% | -11.8% | -36.5% | 25.3% | -2.0% |
| Coal, Hard Mineral Royalty and Other | | | | -11.6% | -3.7% | 36.4% | -42.1% | -13.3% |
| Soda Ash | 103.9% | -77.2% | -2.5% | 19.4% | 1.0% | -19.7% | 20.5% | 21.1% |
| Cost of goods sold | 27.0 | 24.8 | 32.7 | 29.5 | 24.9 | 20.7 | 136.9 | 65.9 |
| Gross profit | 167.2 | 104.2 | 177.6 | 173.3 | 221.4 | 258.5 | 302.7 | 285.0 |
| Gross margin | 86.1% | 80.8% | 84.4% | 85.4% | 89.9% | 92.6% | 68.9% | 81.2% |
| Selling, general and administrative [+] | 17.4 | 14.3 | 16.7 | 16.5 | 18.5 | 17.0 | 7.0 | 7.3 |
| General and administrative | 17.4 | 14.3 | 16.7 | 16.5 | 18.5 | 17.0 | 7.0 | 7.3 |
| Other operating expenses | -22.4 | -11.9 | -60.1 | -103.2 | -3.5 | -13.1 | 17.4 | 15.4 |
| EBITDA [+] | 172.2 | 101.8 | 221.0 | 259.9 | 206.5 | 254.7 | 278.3 | 262.3 |
| EBITDA growth | 69.1% | -53.9% | -15.0% | 25.9% | -18.9% | -8.5% | 6.1% | -13.0% |
| EBITDA margin | 88.6% | 78.9% | 105.0% | 128.2% | 83.8% | 91.2% | 63.3% | 74.8% |
| Depreciation | 17.8 | 9.0 | 12.4 | 17.4 | 20.4 | 28.6 | 56.3 | 58.3 |
| EBITA | 154.4 | 92.8 | 208.5 | 242.6 | 186.1 | 226.1 | 222.0 | 204.0 |
| EBITA margin | 79.5% | 71.9% | 99.1% | 119.6% | 75.5% | 81.0% | 50.5% | 58.1% |
| Amortization of intangibles | 1.3 | 0.2 | 2.5 | 4.3 | 3.0 | | 1.0 | 0.3 |
| EBIT [+] | 153.1 | 92.6 | 206.0 | 238.3 | 183.1 | 226.1 | 221.0 | 203.7 |
| EBIT growth | 65.3% | -55.0% | -13.5% | 30.1% | -19.0% | 2.3% | 8.5% | -14.0% |
| EBIT margin | 78.8% | 71.8% | 97.9% | 117.5% | 74.3% | 81.0% | 50.3% | 58.1% |
| Non-recurring items [+] | 5.3 | 136.5 | 154.7 | 45.7 | 6.5 | 44.9 | 391.4 | 27.6 |
| Asset impairment | 5.1 | 135.9 | 148.2 | 18.3 | 3.0 | 15.9 | 384.5 | 26.2 |
| Loss (gain) on sale of assets | 0.2 | 0.6 | 6.5 | 2.4 | 3.5 | 29.1 | 6.9 | 1.4 |
| Interest expense, net [+] | 38.9 | 41.0 | 47.5 | 70.2 | 82.0 | 89.5 | 86.0 | 78.7 |
| Interest expense | 38.9 | 41.0 | 47.5 | 70.2 | 82.0 | 89.5 | 86.1 | 78.8 |
| Interest income | | | | | | | 0.0 | 0.1 |
| Other income (expense), net [+] | | | -29.3 | | -12.0 | -1.0 | -3.7 | -0.8 |
| Gain (loss) on debt retirement | | | -29.3 | | -7.9 | | | |
| Pre-tax income | 108.9 | -84.8 | -25.4 | 122.4 | 82.5 | 90.6 | -260.2 | 96.7 |
| Income taxes | 108.9 | -84.8 | -26.4 | -17.2 | -6.2 | -6.3 | 311.5 | 96.7 |
| Tax rate | 100.0% | 100.0% | 103.8% | | | | | 100.0% |
| Minority interest | | | | 0.5 | | | | |
| Earnings from continuing ops | 75.7 | -112.7 | -54.3 | 89.7 | 63.2 | 96.9 | -260.2 | 94.5 |
| Earnings from discontinued ops | | | 1.0 | 17.7 | | | -311.5 | 12.1 |
| Net income | 75.7 | -112.7 | -53.4 | 107.3 | 63.2 | 96.9 | -571.7 | 106.7 |
| Net margin | 39.0% | -87.4% | -25.4% | 52.9% | 25.7% | 34.7% | -130.0% | 30.4% |
| |
| Basic EPS [+] | $6.14 | ($9.20) | ($4.43) | $7.32 | $5.17 | $7.92 | ($21.27) | $8.35 |
| Growth | -166.8% | 107.5% | -160.5% | 41.7% | -34.8% | -137.2% | -354.8% | -45.8% |
| Diluted EPS [+] | $3.41 | ($9.20) | ($4.43) | $4.43 | $2.88 | $7.92 | ($21.27) | $8.35 |
| Growth | -137.1% | 107.5% | -200.0% | 53.9% | -63.6% | -137.2% | -354.8% | -45.8% |
| |
| Dividends per share [+] | | | | | | | | $14.31 |
| Growth | | | | | | | -100.0% | -36.4% |
| |
| Shares outstanding (basic) [+] | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 11.3 |
| Growth | 0.6% | 0.0% | 0.1% | 0.1% | 0.0% | 0.0% | 8.0% | 3.4% |
| Shares outstanding (diluted) [+] | 22.2 | 12.3 | 12.3 | 20.2 | 22.0 | 12.2 | 12.2 | 11.3 |
| Growth | 81.0% | 0.0% | -39.4% | -7.8% | 79.4% | 0.0% | 8.0% | 3.4% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |