| In millions, except per share items | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Jun-05-20 | Mar-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 8-K | 10-Q |
| Revenues: | | | | | | | | |
| Revenues | 463.0 | 428.0 | 362.0 | 411.0 | 495.0 | 603.0 | | |
| Revenues growth | -6.5% | -29.0% | | | -41.1% | | | |
| Operating Expenses: | | | | | | | | |
| Cost of goods and services | | | | | | | | |
| Property tax, insurance and other | 51.0 | 55.0 | 57.0 | 59.0 | 63.0 | 68.0 | | |
| Management and royalty fees | 45.0 | 42.0 | 35.0 | 40.0 | 48.0 | 59.0 | | |
| Corporate general and administrative | 31.0 | 28.0 | 27.0 | 28.0 | 31.0 | 33.0 | | |
| Depreciation and amortization | 146.0 | 152.0 | 157.0 | 159.0 | 165.0 | 173.0 | | |
| Gain on sales of real estate | -93.0 | -91.0 | -58.0 | -71.0 | -75.0 | -62.0 | | |
| Gain on casualty | | -7.0 | -6.0 | | -7.0 | -3.0 | | |
| Impairment loss | 4.0 | | | | | 54.0 | | |
| Total Operating Expenses | 469.0 | 461.0 | 525.0 | 560.0 | 768.0 | 871.0 | | |
| Operating income (loss) | -6.0 | -33.0 | -163.0 | -149.0 | -273.0 | -268.0 | | |
| Operating margin | -1.3% | -7.7% | -45.0% | -36.3% | -55.2% | -44.4% | | |
| |
| Other Income (Expense): | | | | | | | | |
| Interest expense | -28.0 | -31.0 | -36.0 | -43.0 | -51.0 | -59.0 | | |
| Other income, net | 3.0 | | 4.0 | | 28.0 | 28.0 | | |
| Total Other Expenses | -25.0 | -26.0 | -32.0 | -38.0 | -23.0 | -31.0 | | |
| Income (loss) before income taxes | -31.0 | -59.0 | -195.0 | -187.0 | -296.0 | -299.0 | | |
| Income tax benefit | | | | 9.0 | 6.0 | 5.0 | | |
| Net income (loss) | -28.0 | -53.0 | -188.0 | -178.0 | -290.0 | -294.0 | | |
| |
| Weighted average common shares outstanding: | | | | | | | | |
| Weighted average common shares outstanding - basic (in shares) | 56.9 | 56.8 | 56.7 | 56.6 | 56.7 | 56.7 | | |
| Weighted average common shares outstanding - diluted (in shares) | 58.4 | 57.2 | 56.7 | 56.6 | 56.7 | 56.7 | | |
| |
| Earnings (loss) per share: | | | | | | | | |
| Basic earnings (loss) per share (in usd per share) | ($0.49) | ($0.93) | ($3.31) | ($3.14) | ($5.09) | ($5.17) | | |
| Diluted earnings (loss) per share (in usd per share) | ($0.52) | ($0.94) | ($3.31) | ($3.14) | ($5.09) | ($5.17) | | |