| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 |
| | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues: | | | | | |
| Sales | 307.9 | 303.6 | 167.6 | | |
| Interest income | 6.0 | 6.4 | 2.4 | 0.8 | 2.3 |
| Net gains on sales of real estate assets | 24.3 | 0.6 | 0.3 | | |
| Other revenue | 1.0 | 0.3 | 0.3 | | 0.3 |
| Total revenues | 342.0 | 313.6 | 173.2 | 185.4 | 208.6 |
| Total revenues growth | 9.1% | 81.0% | -6.5% | -11.1% | |
| Costs and expenses: | | | | | |
| Cost of sales | | | | | |
| Interest expense | -2.4 | -1.4 | -0.2 | | -0.8 |
| |
| Recoveries from loan losses, net | | | | | |
| Impairment losses | 0.5 | 0.0 | 30.8 | | |
| Selling, general and administrative expenses | 116.2 | 76.0 | 66.0 | | 91.8 |
| Total costs and expenses | 339.5 | 284.6 | 228.3 | 213.2 | 226.1 |
| Operating losses | 2.5 | 29.0 | -55.1 | -27.9 | -17.6 |
| Operating margin | 0.7% | 9.3% | -31.8% | -15.0% | -8.4% |
| Equity in net earnings of unconsolidated real estate joint ventures | 38.4 | 18.2 | 0.5 | | 14.2 |
| |
| Gain on consolidation | | | | | |
| Other income (loss) | 1.0 | 0.3 | 0.3 | | 0.3 |
| Foreign exchange loss | 0.9 | 0.8 | -0.7 | | 0.1 |
| (Loss) income before income taxes | 42.8 | 64.2 | -58.3 | 29.0 | -3.0 |
| Benefit (provision) for income taxes | -15.1 | -17.2 | 11.2 | -8.3 | -2.9 |
| Net (loss) income | 27.6 | 47.1 | -47.1 | | -9.5 |
| Net (income) loss attributable to noncontrolling interests | 0.4 | -0.2 | 4.8 | | 0.3 |
| Net (loss) income attributable to shareholders | 28.0 | 46.9 | -42.3 | 13.7 | -9.2 |
| |
| Basic (loss) earnings per share (in dollars per share) | $1.81 | $2.63 | ($2.19) | $0.71 | ($0.48) |
| Diluted (loss) earnings per share (in dollars per share) | $1.81 | $2.63 | ($2.19) | | |
| |
| Basic weighted average number of common shares outstanding (in shares) | 15.5 | 17.8 | 19.3 | 19.3 | 19.3 |
| Diluted weighted average number of common shares outstanding (in shares) | 15.5 | 17.8 | 19.3 | | |
| Net (loss) income | 27.6 | 47.1 | -47.1 | | -9.5 |
| |
| Other comprehensive income (loss), net of tax: | | | | | |
| Foreign currency translation adjustments | -0.9 | 0.0 | 0.2 | 0.3 | -0.2 |
| |
| Other comprehensive income (loss), net | | | | | |
| Comprehensive (loss) income, net of tax | | | | | |
| Comprehensive (income) loss attributable to noncontrolling interests | | | | | |
| Comprehensive (loss) income attributable to shareholders | 27.0 | 46.9 | -42.0 | | -9.4 |