Note 17 - Segment Information - Segment Reporting Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2026 |
May 31, 2025 |
Nov. 30, 2025 |
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| Revenue from external customers | $ 7,854,123 | $ 6,336,690 | $ 14,494,409 | $ 11,477,645 | |||||
| Gross profit | 2,031,867 | 2,059,777 | 3,943,327 | 3,556,286 | |||||
| Operating Expense | 1,745,285 | 1,549,123 | 3,326,728 | 3,043,148 | |||||
| Income from operations | 286,582 | 510,654 | 616,599 | 513,138 | |||||
| Income tax expense (benefit) | 52,406 | 393,811 | 111,411 | 379,157 | |||||
| Total Assets | 23,678,399 | 23,678,399 | $ 22,477,555 | ||||||
| Capital expenditures | [1],[2] | 183,000 | 265,000 | ||||||
| Depreciation & Amortization | 409,720 | 397,935 | |||||||
| Interest expense | 113,047 | 99,666 | 223,824 | 175,354 | |||||
| Engineering | 94,062 | 84,115 | 200,609 | 169,345 | |||||
| Selling | 433,573 | 435,902 | 870,276 | 785,879 | |||||
| General and administrative (G&A) | 1,217,650 | 1,029,106 | 2,255,843 | 2,087,924 | |||||
| Agricultural Products [Member] | |||||||||
| Capital expenditures | [1] | 134,000 | 200,000 | ||||||
| Modular Buildings [Member] | |||||||||
| Capital expenditures | [1] | 49,000 | 65,000 | ||||||
| Operating Segments [Member] | |||||||||
| Revenue from external customers | [2] | 7,854,000 | 6,337,000 | 14,494,000 | 11,478,000 | ||||
| Gross profit | [2] | 2,032,000 | 2,060,000 | 3,943,000 | 3,557,000 | ||||
| Operating Expense | [2] | 1,745,000 | 1,550,000 | 3,327,000 | 3,043,000 | ||||
| Income from operations | [2] | 287,000 | 510,000 | 616,000 | 513,000 | ||||
| Income (loss) before tax | [2] | 226,000 | 1,876,000 | 481,000 | 1,805,000 | ||||
| Income tax expense (benefit) | [2] | 53,000 | 394,000 | 112,000 | 379,000 | ||||
| Total Assets | [2] | 23,678,000 | 20,879,000 | 23,678,000 | 20,879,000 | ||||
| Capital expenditures | [2] | 340,000 | 516,000 | ||||||
| Depreciation & Amortization | [2] | 205,000 | 190,000 | 409,000 | 397,000 | ||||
| Interest expense | [2] | 113,000 | 99,000 | 224,000 | 176,000 | ||||
| Engineering | [2] | 94,000 | 84,000 | 201,000 | 169,000 | ||||
| Selling | [2] | 434,000 | 436,000 | 870,000 | 786,000 | ||||
| General and administrative (G&A) | [2] | 1,217,000 | 1,030,000 | 2,256,000 | 2,088,000 | ||||
| Operating Segments [Member] | Agricultural Products [Member] | |||||||||
| Revenue from external customers | 4,374,000 | 4,026,000 | 8,128,000 | 6,973,000 | |||||
| Gross profit | 1,066,000 | 1,095,000 | 2,362,000 | 1,883,000 | |||||
| Operating Expense | 1,295,000 | 1,144,000 | 2,490,000 | 2,310,000 | |||||
| Income from operations | (229,000) | (49,000) | (128,000) | (428,000) | |||||
| Income (loss) before tax | (279,000) | 1,105,000 | (270,000) | 667,000 | |||||
| Income tax expense (benefit) | (64,000) | 232,000 | (62,000) | 140,000 | |||||
| Total Assets | 19,315,000 | 17,848,000 | 19,315,000 | 17,848,000 | |||||
| Capital expenditures | 309,000 | 449,000 | |||||||
| Depreciation & Amortization | 163,000 | 147,000 | 317,000 | 295,000 | |||||
| Interest expense | 100,000 | 85,000 | 197,000 | 147,000 | |||||
| Engineering | 94,000 | 84,000 | 201,000 | 169,000 | |||||
| Selling | 257,000 | 261,000 | 543,000 | 467,000 | |||||
| General and administrative (G&A) | 944,000 | 799,000 | 1,746,000 | 1,674,000 | |||||
| Operating Segments [Member] | Modular Buildings [Member] | |||||||||
| Revenue from external customers | 3,480,000 | 2,311,000 | 6,366,000 | 4,505,000 | |||||
| Gross profit | 966,000 | 965,000 | 1,581,000 | 1,674,000 | |||||
| Operating Expense | 450,000 | 406,000 | 837,000 | 733,000 | |||||
| Income from operations | 516,000 | 559,000 | 744,000 | 941,000 | |||||
| Income (loss) before tax | 505,000 | 771,000 | 751,000 | 1,138,000 | |||||
| Income tax expense (benefit) | 117,000 | 162,000 | 174,000 | 239,000 | |||||
| Total Assets | 4,363,000 | 3,031,000 | 4,363,000 | 3,031,000 | |||||
| Capital expenditures | 31,000 | 67,000 | |||||||
| Depreciation & Amortization | 42,000 | 42,000 | 92,000 | 103,000 | |||||
| Interest expense | 13,000 | 14,000 | 27,000 | 29,000 | |||||
| Engineering | 0 | 0 | 0 | 0 | |||||
| Selling | 177,000 | 175,000 | 327,000 | 319,000 | |||||
| General and administrative (G&A) | 273,000 | 231,000 | 510,000 | 414,000 | |||||
| Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | |||||||||
| Operating Expense | [2] | 207,000 | 184,000 | 349,000 | 330,000 | ||||
| Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Agricultural Products [Member] | |||||||||
| Operating Expense | 162,000 | 139,000 | 259,000 | 240,000 | |||||
| Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Modular Buildings [Member] | |||||||||
| Operating Expense | $ 45,000 | $ 45,000 | $ 90,000 | $ 90,000 | |||||
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- Definition The aggregate costs incurred in engineering manufactured goods. No definition available.
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The aggregate total amount of expenses directly related to the marketing or selling of products or services. No definition available.
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