| Segment Reporting [Table Text Block] |
| | | Three Months Ended August 31, 2026 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated 1 | |
| Revenue from external customers | | $ | 3,065,000 | | | $ | 2,551,000 | | | | 5,616,000 | |
| Gross profit | | | 818,000 | | | | 843,000 | | | | 1,661,000 | |
| Operating Expense | | | 1,387,000 | | | | 343,000 | | | | 1,730,000 | |
| Income from operations | | | (569,000 | ) | | | 500,000 | | | | (69,000 | ) |
| Income (loss) before tax | | | (669,000 | ) | | | 489,000 | | | | (180,000 | ) |
| Income tax expense (benefit) | | $ | (152,000 | ) | | $ | 112,000 | | | | (40,000 | ) |
| | | | | | | | | | | | | |
| Total Assets | | $ | 20,191,000 | | | $ | 6,024,000 | | | | 26,215,000 | |
| Capital expenditures | | | 1,291,000 | | | | 34,000 | | | | 1,325,000 | |
| Depreciation & Amortization | | | 176,000 | | | | 40,000 | | | | 216,000 | |
| Interest expense | | | 101,000 | | | | 13,000 | | | | 114,000 | |
| Engineering | | | 99,000 | | | | - | | | | 99,000 | |
| Selling | | | 264,000 | | | | 160,000 | | | | 424,000 | |
| General and administrative (G&A) | | | 1,024,000 | | | | 183,000 | | | | 1,207,000 | |
| Corporate expense (included in G&A) | | $ | 119,000 | | | $ | 45,000 | | | | 164,000 | |
| | | Three Months Ended August 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated 1 | |
| Revenue from external customers | | $ | 2,983,000 | | | $ | 3,449,000 | | | | 6,432,000 | |
| Gross profit | | | 546,000 | | | | 1,220,000 | | | | 1,766,000 | |
| Operating Expense | | | 1,029,000 | | | | 392,000 | | | | 1,421,000 | |
| Income (loss) from operations | | | (483,000 | ) | | | 828,000 | | | | 345,000 | |
| Income (loss) before tax | | | (491,000 | ) | | | 812,000 | | | | 321,000 | |
| Income tax expense (benefit) | | $ | (103,000 | ) | | $ | 170,000 | | | | 67,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 18,323,000 | | | $ | 3,493,000 | | | | 21,816,000 | |
| Capital expenditures2 | | | 218,000 | | | | 88,000 | | | | 306,000 | |
| Depreciation & Amortization | | | 150,000 | | | | 45,000 | | | | 195,000 | |
| Interest Expense | | | 68,000 | | | | 16,000 | | | | 84,000 | |
| Engineering | | | 87,000 | | | | - | | | | 87,000 | |
| Selling | | | 199,000 | | | | 152,000 | | | | 351,000 | |
| General and administrative (G&A) | | | 743,000 | | | | 240,000 | | | | 983,000 | |
| Corporate expense (included in G&A) | | $ | 85,000 | | | $ | 45,000 | | | | 130,000 | |
| | | Nine Months Ended August 31, 2026 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 11,193,000 | | | $ | 8,916,000 | | | $ | 20,109,000 | |
| Gross profit | | | 3,180,000 | | | | 2,424,000 | | | | 5,604,000 | |
| Operating Expense | | | 3,877,000 | | | | 1,180,000 | | | | 5,057,000 | |
| Income (loss) from operations | | | (697,000 | ) | | | 1,244,000 | | | | 547,000 | |
| Income (loss) before tax | | | (939,000 | ) | | | 1,240,000 | | | | 301,000 | |
| Income tax expense (benefit) | | | (214,000 | ) | | $ | 285,000 | | | $ | 71,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 20,191,000 | | | $ | 6,024,000 | | | $ | 26,215,000 | |
| Capital expenditures | | | 1,740,000 | | | | 101,000 | | | | 1,841,000 | |
| Depreciation & Amortization | | | 493,000 | | | | 133,000 | | | | 626,000 | |
| Interest expense | | | 298,000 | | | | 40,000 | | | | 338,000 | |
| Engineering | | | 300,000 | | | | - | | | | 300,000 | |
| Selling | | | 808,000 | | | | 487,000 | | | | 1,295,000 | |
| General and administrative (G&A) | | | 2,769,000 | | | | 694,000 | | | | 3,463,000 | |
| Corporate expense (included in G&A) | | $ | 378,000 | | | $ | 135,000 | | | $ | 513,000 | |
| | | Nine Months Ended August 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 9,956,000 | | | $ | 7,954,000 | | | | 17,910,000 | |
| Gross profit | | | 2,428,000 | | | | 2,894,000 | | | | 5,322,000 | |
| Operating Expense | | | 3,340,000 | | | | 1,125,000 | | | | 4,465,000 | |
| Income (loss) from operations | | | (911,000 | ) | | | 1,769,000 | | | | 858,000 | |
| Income (loss) before tax | | | 176,000 | | | | 1,951,000 | | | | 2,127,000 | |
| Income tax expense (benefit) | | $ | 37,000 | | | $ | 409,000 | | | | 446,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 18,323,000 | | | $ | 3,493,000 | | | | 21,816,000 | |
| Capital expenditures3 | | | 419,000 | | | | 153,000 | | | | 572,000 | |
| Depreciation & Amortization | | | 445,000 | | | | 148,000 | | | | 593,000 | |
| Interest expense | | | 214,000 | | | | 45,000 | | | | 259,000 | |
| Engineering | | | 257,000 | | | | - | | | | 257,000 | |
| Selling | | | 666,000 | | | | 471,000 | | | | 1,137,000 | |
| General and administrative (G&A) | | | 2,417,000 | | | | 654,000 | | | | 3,071,000 | |
| Corporate expense (included in G&A) | | $ | 325,000 | | | $ | 135,000 | | | $ | 460,000 | |
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