v3.26.3
Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 28, 2026
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Feb. 28, 2026
May 31, 2026
Deferred Tax Assets, Investments $ 19,000 $ 0   $ 0   $ 19,000  
Investment Income, Interest   54,000 $ 42,000 $ 136,000 $ 42,000    
Rate of Gross Revenue Paid to Shareholders       7.50%      
Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Adjustments 346,000 2,000 $ (0) $ 333,000 (0)    
Accounts Receivable, after Allowance for Credit Loss, Current 3,367,000 3,035,000   3,035,000   3,367,000  
Accounts Receivable, Allowance for Credit Loss, Current 0 0   0   0  
Accounts Receivable, Allowance for Credit Loss, Writeoff       0 $ 0    
Cash, Uninsured Amount $ 981,000 $ 544,000   $ 544,000   $ 981,000  
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares)   0 0 0 0    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)     0        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     0        
Chief Operating Officer [Member]              
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)   3,000          
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance (in shares)             5,000
Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share)   $ 28.77          
Die from ES Components [Member]              
Related Party Transaction, Purchases from Related Party   $ 41,000 $ 8,000 $ 45,000 $ 58,000    
Used Equipment Purchased From ES Components [Member]              
Related Party Transaction, Purchases from Related Party   0 0 0 0    
ES Components [Member]              
Revenues   0 0 $ 0 0    
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Conmed Linvatec [Member]              
Concentration Risk, Percentage       32.00%   26.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | RTX Corporation [Member]              
Concentration Risk, Percentage       20.00%   16.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | L3Harris [Member]              
Concentration Risk, Percentage       17.00%   26.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Intracom Defense Electronics [Member]              
Concentration Risk, Percentage           12.00%  
Non-Current Securities [Member]              
Investment Income, Interest   $ 54,000 $ 42,000 $ 110,000 $ 42,000