| Segment Reporting [Table Text Block] |
| | | Land Leasing & Management | | | Agribusiness Venture | | | Land Development and Sales | | | Commercial Real Estate Leasing | | | Other | | | Consolidated | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
| Operating revenues (1) | | $ | 1,192 | | | $ | - | | | $ | 257 | | | $ | 1,956 | | | $ | - | | | $ | 3,405 | |
| Operating costs and expenses | | | (1,784 | ) | | | (55 | ) | | | (338 | ) | | | (773 | ) | | | - | | | | (2,950 | ) |
| Depreciation expense | | | (30 | ) | | | (7 | ) | | | - | | | | (156 | ) | | | (40 | ) | | | (233 | ) |
| General and administrative expenses | | | (195 | ) | | | (65 | ) | | | (195 | ) | | | (65 | ) | | | (1,717 | ) | | | (2,237 | ) |
| Operating income (loss) | | | (817 | ) | | | (127 | ) | | | (276 | ) | | | 962 | | | | (1,757 | ) | | | (2,015 | ) |
| Pension and other postretirement expenses | | | | | | | | | | | | | | | | | | | | | | | (20 | ) |
| Interest expense | | | | | | | | | | | | | | | | | | | | | | | (62 | ) |
| Other income, net | | | | | | | | | | | | | | | | | | | | | | | 38 | |
| Net loss from continuing operations | | | | | | | | | | | | | | | | | | | | | | | (2,059 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| Capital expenditures (2) | | $ | 258 | | | $ | 280 | | | $ | 647 | | | $ | 40 | | | $ | - | | | $ | 1,225 | |
| Assets (3) | | $ | 16,027 | | | $ | 2,095 | | | $ | 15,279 | | | $ | 9,098 | | | $ | 5,373 | | | $ | 47,872 | |
| | | Land Leasing & Management | | | Agribusiness Venture | | | Land Development and Sales | | | Commercial Real Estate Leasing | | | Other | | | Consolidated | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
| Operating revenues (1) | | $ | 1,234 | | | $ | - | | | $ | 2,619 | | | $ | 1,951 | | | $ | - | | | $ | 5,804 | |
| Operating costs and expenses | | | (652 | ) | | | - | | | | (2,933 | ) | | | (714 | ) | | | - | | | | (4,299 | ) |
| Depreciation expense | | | (18 | ) | | | - | | | | - | | | | (136 | ) | | | (32 | ) | | | (186 | ) |
| General and administrative expenses | | | (228 | ) | | | (76 | ) | | | (228 | ) | | | (75 | ) | | | (2,491 | ) | | | (3,098 | ) |
| Operating income (loss) | | | 336 | | | | (76 | ) | | | (542 | ) | | | 1,025 | | | | (2,525 | ) | | | (1,779 | ) |
| Pension and other postretirement expenses | | | | | | | | | | | | | | | | | | | | | | | (6,919 | ) |
| Interest expense | | | | | | | | | | | | | | | | | | | | | | | (48 | ) |
| Gain on asset disposal, net | | | | | | | | | | | | | | | | | | | | | | | 1 | |
| Other income | | | | | | | | | | | | | | | | | | | | | | | 105 | |
| Net loss from continuing operations | | | | | | | | | | | | | | | | | | | | | | | (8,640 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| Capital expenditures (2) | | $ | 104 | | | $ | - | | | $ | 431 | | | $ | 44 | | | $ | - | | | $ | 579 | |
| Assets (3) | | $ | 14,940 | | (4) | $ | 196 | | | $ | 11,677 | | | $ | 10,409 | | | $ | 10,010 | | | $ | 47,232 | |
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