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Note 1 - Summary of Significant Accounting Policies (Details Textual)
9 Months Ended 12 Months Ended 13 Months Ended
Aug. 30, 2024
Nov. 30, 2024
USD ($)
Nov. 30, 2023
USD ($)
Nov. 30, 2024
USD ($)
Dec. 01, 2022
USD ($)
Number of Operating Segments 3        
Lease, Cost   $ 10,199 $ 17,459    
Operating Lease, Weighted Average Remaining Lease Term (Month)   18 months   18 months  
Operating Lease, Weighted Average Discount Rate, Percent   4.75%   4.75%  
Finance Lease, Weighted Average Remaining Lease Term (Month)   40 months   40 months  
Finance Lease, Weighted Average Discount Rate, Percent   5.43%   5.43%  
Finance Lease, Right-of-Use Asset, Amortization   $ 171,830 129,891    
Contract with Customer, Liability, Revenue Recognized   692,000 1,153,000    
Construction Contractor, Receivable, Excluding Contract Retainage   2,373,000 3,432,000 $ 2,373,000 $ 2,466,000
Contract with Customer, Asset, after Allowance for Credit Loss   213,000 289,000 213,000 451,000
Contract with Customer, Liability   2,110,000 767,000 2,110,000 $ 1,153,000
Amortization of Intangible Assets   121,819 30,455    
Research and Development Expense   216,000 204,000    
Advertising Expense   153,000 229,000    
Internal Use Software [Member] | Operating Expense [Member] | Noncapitalized Implementation Costs [Member]          
Amortization of Intangible Assets   122,000 30,000    
Research and Development Expense, Software (Excluding Acquired in Process Cost)     58,000    
Other Current Assets [Member] | Internal Use Software [Member]          
Finite-Lived Intangible Assets, Net   61,000 183,000 $ 61,000  
Product [Member]          
Contract with Customer, Liability, Revenue Recognized   $ 1,073,000 3,110,000    
Minimum [Member]          
Property, Plant and Equipment, Useful Life (Year)   3 years   3 years  
Maximum [Member]          
Property, Plant and Equipment, Useful Life (Year)   40 years   40 years  
Agricultural Products, Floorplan Program [Member]          
Accounts Receivable, before Allowance for Credit Loss   $ 1,073,000 $ 3,110,000 $ 1,073,000  
Revenue Benchmark [Member] | Customer Concentration Risk [Member]          
Number of Major Customers     1 2  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]          
Concentration Risk, Percentage     12.00% 17.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Two [Member]          
Concentration Risk, Percentage       15.00%