| In millions, except per share items | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| REVENUE | | | | | | | | |
| Revenues | | | | | | | | |
| Total revenue | 99.4 | 98.3 | 97.9 | 100.2 | 128.6 | 106.8 | 94.0 | 95.7 |
| Total revenue growth | -0.8% | -8.0% | 4.1% | 4.7% | 47.3% | 40.9% | 27.7% | 2.5% |
| EXPENSES | | | | | | | | |
| Depreciation and amortization | 25.1 | 24.3 | 24.7 | 24.5 | 23.8 | 23.2 | 22.5 | 22.9 |
| Real estate taxes | 15.7 | 16.2 | 15.5 | 16.0 | 16.0 | 15.9 | 15.4 | 16.6 |
| Property operating | 17.4 | 17.7 | 17.6 | 21.2 | 16.7 | 15.7 | 15.9 | 20.3 |
| General and administrative | 9.1 | 9.9 | 10.6 | 11.1 | 10.9 | 10.1 | 9.5 | 8.7 |
| Real estate impairment loss | 34.1 | | | | | | | |
| Lease expense | 3.2 | 3.1 | 3.1 | 3.1 | | 3.2 | 3.2 | 3.3 |
| Total expenses | 104.5 | 71.2 | 71.5 | 76.0 | 138.0 | 68.4 | 66.4 | 151.9 |
| Gain on sale of real estate | 0.4 | | 0.4 | | | 6.9 | | 11.7 |
| Interest income | 0.5 | 0.3 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 |
| Interest and debt expense | -15.3 | -15.3 | -14.2 | -14.0 | -13.7 | -14.6 | -14.7 | -14.8 |
| Income (loss) before income taxes | -19.4 | 12.1 | 12.7 | 10.4 | 44.2 | 30.8 | 12.9 | 21.0 |
| Income tax expense | -0.7 | -0.6 | -0.7 | -0.9 | -0.2 | -0.7 | 0.0 | -0.2 |
| Net income (loss) | -20.1 | 11.5 | 12.0 | 9.5 | 44.0 | 30.1 | 13.0 | 20.7 |
| |
| Less net (income) loss attributable to NCI in: | | | | | | | | |
| Operating partnership | 0.8 | -0.5 | -0.5 | -0.4 | -1.7 | -1.1 | -0.6 | -0.9 |
| Consolidated subsidiaries | 0.2 | 0.4 | 0.1 | 0.3 | | -1.2 | 0.2 | |
| Net income (loss) attributable to common shareholders | -19.1 | 11.4 | 11.6 | 9.5 | 42.5 | 27.8 | 12.5 | 19.9 |
| |
| Earnings per common share - Basic (in dollars per share) | ($0.16) | $0.10 | $0.10 | $0.08 | $0.37 | $0.24 | $0.11 | $0.17 |
| Earnings per common share - Diluted (in dollars per share) | ($0.16) | $0.10 | $0.10 | $0.08 | $0.37 | $0.24 | $0.11 | $0.17 |
| |
| Weighted average shares outstanding - Basic (in shares) | 117.5 | 117.4 | 117.4 | 117.3 | 117.0 | 117.1 | 117.0 | 117.0 |
| Weighted average shares outstanding - Diluted (in shares) | 117.5 | 121.7 | 117.4 | 117.4 | 121.4 | 117.1 | 117.0 | 117.0 |
| Net income (loss) | -20.1 | 11.5 | 12.0 | 9.5 | 44.0 | 30.1 | 13.0 | 20.7 |
| Effective portion of change in fair value of derivatives | -0.3 | 0.6 | -0.1 | | | | | |
| |
| Comprehensive income (loss) | | | | | | | | |
| Less comprehensive loss attributable to NCI in Operating partnership | 0.0 | 0.0 | 0.0 | | | | | |
| Less net (income) loss attributable to NCI in Operating partnership | 0.8 | -0.5 | -0.5 | -0.4 | -1.7 | -1.1 | -0.6 | -0.9 |
| Less net (income) loss attributable to NCI in Consolidated subsidiaries | 0.2 | 0.4 | 0.1 | 0.3 | | -1.2 | 0.2 | |
| Comprehensive income (loss) attributable to common shareholders | -19.4 | 12.0 | 11.6 | 9.5 | | 27.8 | 12.5 | |