v3.26.3
Note 17 - Segment Information - Segment Reporting Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Nov. 30, 2025
Revenue from external customers $ 5,615,156 $ 6,432,296 $ 20,109,565 $ 17,909,941  
Gross profit 1,660,490 1,766,165 5,603,818 5,322,451  
Operating Expense 1,730,492 1,421,436 5,057,221 4,464,583  
Income from operations (70,002) 344,729 546,597 857,868  
Income tax expense (benefit) (40,275) 67,147 71,137 446,304  
Total Assets 26,214,639   26,214,639   $ 22,477,555
Capital expenditures [1]   306,000      
Depreciation & Amortization     625,059 593,954  
Interest expense 113,734 83,668 337,558 259,022  
Engineering 99,092 87,339 299,701 256,684  
Selling 423,895 350,771 1,294,170 1,136,650  
General and administrative (G&A) 1,207,505 983,326 3,463,350 3,071,249  
Agricultural Products [Member]          
Capital expenditures   218,000      
Modular Buildings [Member]          
Capital expenditures   88,000      
Operating Segments [Member]          
Revenue from external customers [1] 5,616,000 6,432,000 20,109,000 17,910,000  
Gross profit [1] 1,661,000 1,766,000 5,604,000 5,322,000  
Operating Expense [1] 1,730,000 1,421,000 5,057,000 4,465,000  
Income from operations [1] (69,000) 345,000 547,000 858,000  
Income (loss) before tax [1] (180,000) 321,000 301,000 2,127,000  
Income tax expense (benefit) [1] (40,000) 67,000 71,000 446,000  
Total Assets [1] 26,215,000 21,816,000 26,215,000 21,816,000  
Capital expenditures 1,325,000 [1]   1,841,000 572,000 [2]  
Depreciation & Amortization [1] 216,000 195,000 626,000 593,000  
Interest expense [1] 114,000 84,000 338,000 259,000  
Engineering [1] 99,000 87,000 300,000 257,000  
Selling [1] 424,000 351,000 1,295,000 1,137,000  
General and administrative (G&A) [1] 1,207,000 983,000 3,463,000 3,071,000  
Operating Segments [Member] | Agricultural Products [Member]          
Revenue from external customers 3,065,000 2,983,000 11,193,000 9,956,000  
Gross profit 818,000 546,000 3,180,000 2,428,000  
Operating Expense 1,387,000 1,029,000 3,877,000 3,340,000  
Income from operations (569,000) (483,000) (697,000) (911,000)  
Income (loss) before tax (669,000) (491,000) (939,000) 176,000  
Income tax expense (benefit) (152,000) (103,000) (214,000) 37,000  
Total Assets 20,191,000 18,323,000 20,191,000 18,323,000  
Capital expenditures 1,291,000   1,740,000 419,000 [2]  
Depreciation & Amortization 176,000 150,000 493,000 445,000  
Interest expense 101,000 68,000 298,000 214,000  
Engineering 99,000 87,000 300,000 257,000  
Selling 264,000 199,000 808,000 666,000  
General and administrative (G&A) 1,024,000 743,000 2,769,000 2,417,000  
Operating Segments [Member] | Modular Buildings [Member]          
Revenue from external customers 2,551,000 3,449,000 8,916,000 7,954,000  
Gross profit 843,000 1,220,000 2,424,000 2,894,000  
Operating Expense 343,000 392,000 1,180,000 1,125,000  
Income from operations 500,000 828,000 1,244,000 1,769,000  
Income (loss) before tax 489,000 812,000 1,240,000 1,951,000  
Income tax expense (benefit) 112,000 170,000 285,000 409,000  
Total Assets 6,024,000 3,493,000 6,024,000 3,493,000  
Capital expenditures 34,000   101,000 153,000 [2]  
Depreciation & Amortization 40,000 45,000 133,000 148,000  
Interest expense 13,000 16,000 40,000 45,000  
Engineering 0 0 0 0  
Selling 160,000 152,000 487,000 471,000  
General and administrative (G&A) 183,000 240,000 694,000 654,000  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]          
Operating Expense [1] 164,000 130,000 513,000 460,000  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Agricultural Products [Member]          
Operating Expense 119,000 85,000 378,000 325,000  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Modular Buildings [Member]          
Operating Expense $ 45,000 $ 45,000 $ 135,000 $ 135,000  
[1] The consolidated total in the tables is a sum of segment figures and may not tie to actual figures in the condensed consolidated financial statements due to rounding.
[2] Includes $97,120 of Right of Use Assets acquired in the Agricultural Products Segment.