| Segment Reporting [Table Text Block] |
| | | Three Months Ended May 31, 2026 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated 1 | |
| Revenue from external customers | | $ | 4,374,000 | | | $ | 3,480,000 | | | | 7,854,000 | |
| Gross profit | | | 1,066,000 | | | | 966,000 | | | | 2,032,000 | |
| Operating Expense | | | 1,295,000 | | | | 450,000 | | | | 1,745,000 | |
| Income from operations | | | (229,000 | ) | | | 516,000 | | | | 287,000 | |
| Income (loss) before tax | | | (279,000 | ) | | | 505,000 | | | | 226,000 | |
| Income tax expense (benefit) | | $ | (64,000 | ) | | $ | 117,000 | | | | 53,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 19,315,000 | | | $ | 4,363,000 | | | | 23,678,000 | |
| Capital expenditures | | | 309,000 | | | | 31,000 | | | | 340,000 | |
| Depreciation & Amortization | | | 163,000 | | | | 42,000 | | | | 205,000 | |
| Interest expense | | | 100,000 | | | | 13,000 | | | | 113,000 | |
| Engineering | | | 94,000 | | | | - | | | | 94,000 | |
| Selling | | | 257,000 | | | | 177,000 | | | | 434,000 | |
| General and administrative (G&A) | | | 944,000 | | | | 273,000 | | | | 1,217,000 | |
| Corporate expense (included in G&A) | | $ | 162,000 | | | $ | 45,000 | | | | 207,000 | |
| | | Three Months Ended May 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated 1 | |
| Revenue from external customers | | $ | 4,026,000 | | | $ | 2,311,000 | | | | 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 | | | 147,000 | | | | 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 | |
| | | Six Months Ended May 31, 2026 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated1 | |
| Revenue from external customers | | $ | 8,128,000 | | | $ | 6,366,000 | | | $ | 14,494,000 | |
| Gross profit | | | 2,362,000 | | | | 1,581,000 | | | | 3,943,000 | |
| Operating Expense | | | 2,490,000 | | | | 837,000 | | | | 3,327,000 | |
| Income (loss) from operations | | | (128,000 | ) | | | 744,000 | | | | 616,000 | |
| Income (loss) before tax | | | (270,000 | ) | | | 751,000 | | | | 481,000 | |
| Income tax expense (benefit) | | | (62,000 | ) | | $ | 174,000 | | | $ | 112,000 | |
| | | | | | | | | | | | | |
| Total Assets | | $ | 19,315,000 | | | $ | 4,363,000 | | | $ | 23,678,000 | |
| Capital expenditures | | | 449,000 | | | | 67,000 | | | | 516,000 | |
| Depreciation & Amortization | | | 317,000 | | | | 92,000 | | | | 409,000 | |
| Interest expense | | | 197,000 | | | | 27,000 | | | | 224,000 | |
| Engineering | | | 201,000 | | | | - | | | | 201,000 | |
| Selling | | | 543,000 | | | | 327,000 | | | | 870,000 | |
| General and administrative (G&A) | | | 1,746,000 | | | | 510,000 | | | | 2,256,000 | |
| Corporate expense (included in G&A) | | $ | 259,000 | | | $ | 90,000 | | | $ | 349,000 | |
| | | Six Months Ended May 31, 2025 | |
| | | Agricultural Products | | | Modular Buildings | | | Consolidated1 | |
| 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 | | | 295,000 | | | | 103,000 | | | | 397,000 | |
| 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 | |
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