v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
May 31, 2026
Feb. 28, 2026
May 31, 2026
May 31, 2025
Feb. 28, 2026
Deferred Tax Assets, Investments $ 21,000 $ 19,000 $ 21,000   $ 19,000
Investment Income, Interest     $ 82,000 $ 0  
Rate of Gross Revenue Paid to Shareholders     7.50%    
Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Adjustments 331,000 346,000 $ 331,000 (0)  
Accounts Receivable, after Allowance for Credit Loss, Current 3,001,000 3,367,000 3,001,000   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 $ 620,000 $ 981,000 $ 620,000   $ 981,000
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares)     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]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)     5,000    
Die from ES Components [Member]          
Related Party Transaction, Purchases from Related Party     $ 4,000 $ 50,000  
Used Equipment Purchased From ES Components [Member]          
Related Party Transaction, Purchases from Related Party     0 0  
ES Components [Member]          
Revenues     $ 0 0  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | L3Harris [Member]          
Concentration Risk, Percentage     35.00%   26.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Conmed Linvatec [Member]          
Concentration Risk, Percentage     34.00%   26.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | RTX Corporation [Member]          
Concentration Risk, Percentage     12.00%   16.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Intracom Defense Electronics [Member]          
Concentration Risk, Percentage         12.00%
Non-Current Securities [Member]          
Investment Income, Interest     $ 57,000 $ 0