| Schedule of Segment Reporting Information, by Segment [Table Text Block] |
| | | Three Months Ended May 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 4,025,000 | | | $ | 2,312,000 | | | $ | 6,337,000 | |
| Gross profit | | | 1,095,000 | | | | 965,000 | | | | 2,060,000 | |
| Operating Expense | | | 1,144,000 | | | | 406,000 | | | | 1,550,000 | |
| Income (loss) from operations | | | (49,000 | ) | | | 559,000 | | | | 510,000 | |
| Income (loss) before tax | | | 1,105,000 | | | | 771,000 | | | | 1,876,000 | |
| Income tax expense (benefit) | | $ | 232,000 | | | $ | 162,000 | | | $ | 394,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 17,848,000 | | | $ | 3,031,000 | | | $ | 20,879,000 | |
| Capital expenditures2 | | | 134,000 | | | | 49,000 | | | | 183,000 | |
| Depreciation & Amortization | | | 148,000 | | | | 42,000 | | | | 190,000 | |
| Interest expense | | | 85,000 | | | | 14,000 | | | | 99,000 | |
| Engineering | | | 84,000 | | | | - | | | | 84,000 | |
| Selling | | | 261,000 | | | | 175,000 | | | | 436,000 | |
| General and administrative (G&A) | | | 799,000 | | | | 231,000 | | | | 1,030,000 | |
| Corporate expense (included in G&A) | | $ | 139,000 | | | $ | 45,000 | | | $ | 184,000 | |
| | | Three Months Ended May 31, 2024 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 4,555,000 | | | $ | 2,175,000 | | | $ | 6,730,000 | |
| Gross profit | | | 1,323,000 | | | | 584,000 | | | | 1,907,000 | |
| Operating Expense | | | 1,481,000 | | | | 257,000 | | | | 1,738,000 | |
| Income (loss) from operations | | | (158,000 | ) | | | 327,000 | | | | 169,000 | |
| Income (loss) before tax | | | (323,000 | ) | | | 318,000 | | | | (5,000 | ) |
| Income tax expense (benefit) | | $ | (68,000 | ) | | $ | 67,000 | | | $ | (1,000 | ) |
| | | | | | | | | | | | | |
| Total Assets | | $ | 19,528,000 | | | $ | 2,611,000 | | | $ | 22,139,000 | |
| Capital expenditures | | | 205,000 | | | | 27,000 | | | | 232,000 | |
| Depreciation & Amortization | | | 161,000 | | | | 71,000 | | | | 232,000 | |
| Interest Expense | | | 150,000 | | | | 9,000 | | | | 159,000 | |
| Engineering | | | 107,000 | | | | - | | | | 107,000 | |
| Selling | | | 321,000 | | | | 77,000 | | | | 398,000 | |
| General and administrative (G&A) | | | 1,053,000 | | | | 180,000 | | | | 1,233,000 | |
| Corporate expense (included in G&A) | | $ | 136,000 | | | $ | 30,000 | | | $ | 166,000 | |
| | | Six Months Ended May 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 6,973,000 | | | $ | 4,505,000 | | | $ | 11,478,000 | |
| Gross profit | | | 1,883,000 | | | | 1,674,000 | | | | 3,557,000 | |
| Operating Expense | | | 2,310,000 | | | | 733,000 | | | | 3,043,000 | |
| Income (loss) from operations | | | (428,000 | ) | | | 941,000 | | | | 513,000 | |
| Income (loss) before tax | | | 667,000 | | | | 1,138,000 | | | | 1,805,000 | |
| Income tax expense (benefit) | | $ | 140,000 | | | $ | 239,000 | | | $ | 379,000 | |
| | | | | | | | | | | | - | |
| Total Assets | | $ | 17,848,000 | | | $ | 3,031,000 | | | $ | 20,879,000 | |
| Capital expenditures2 | | | 200,000 | | | | 65,000 | | | | 265,000 | |
| Depreciation & Amortization | | | 295,041 | | | | 103,000 | | | | 398,041 | |
| Interest expense | | | 147,000 | | | | 29,000 | | | | 176,000 | |
| Engineering | | | 169,000 | | | | - | | | | 169,000 | |
| Selling | | | 467,000 | | | | 319,000 | | | | 786,000 | |
| General and administrative (G&A) | | | 1,674,000 | | | | 414,000 | | | | 2,088,000 | |
| Corporate expense (included in G&A) | | $ | 240,000 | | | $ | 90,000 | | | $ | 330,000 | |
| | | Six Months Ended May 31, 2024 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated (Continuing Operations)1 | |
| Revenue from external customers | | $ | 8,792,000 | | | $ | 3,662,000 | | | $ | 12,454,000 | |
| Gross profit | | | 2,464,000 | | | | 916,000 | | | | 3,380,000 | |
| Operating Expense | | | 3,049,000 | | | | 543,000 | | | | 3,592,000 | |
| Income (loss) from operations | | | (584,000 | ) | | | 373,000 | | | | (211,000 | ) |
| Income (loss) before tax | | | (897,000 | ) | | | 355,000 | | | | (542,000 | ) |
| Income tax expense (benefit) | | $ | (188,000 | ) | | $ | 75,000 | | | $ | (113,000 | ) |
| | | | | | | | | | | | | |
| Total Assets | | $ | 19,528,000 | | | $ | 2,611,000 | | | $ | 22,139,000 | |
| Capital expenditures | | | 389,000 | | | | 124,000 | | | | 513,000 | |
| Depreciation & Amortization | | | 308,000 | | | | 126,000 | | | | 434,000 | |
| Interest expense | | | 303,000 | | | | 19,000 | | | | 322,000 | |
| Engineering | | | 266,000 | | | | 1,000 | | | | 267,000 | |
| Selling | | | 707,000 | | | | 154,000 | | | | 861,000 | |
| General and administrative (G&A) | | | 2,076,000 | | | | 388,000 | | | | 2,464,000 | |
| Corporate expense (included in G&A) | | $ | 324,000 | | | $ | 60,000 | | | $ | 384,000 | |
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