v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Aug. 13, 2025
shares
Feb. 28, 2026
USD ($)
shares
Feb. 28, 2025
USD ($)
shares
Equity Securities, FV-NI   $ 2,000 $ 919,000
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss   79,000 16,000
Equity Securities, FV-NI, Accumulated Gross Unrealized Gains   0 402,000
Deferred Tax Assets, Investments   19,000  
Deferred Tax Liabilities, Investments     94,000
Investment Income, Interest   163,000 6,000
Accounts Receivable, Allowance for Credit Loss, Current   0 0
Accounts Receivable, Allowance for Credit Loss, Writeoff   0 0
Cash, Uninsured Amount   $ 981,000 $ 775,000
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares) | shares   0 0
Long-Lived Asset, Held and Used, Impairment Loss   $ 0 $ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) | shares     0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 14,000 0 0
Number of Reportable Segments   1  
Number of Operating Segments   1  
Die from ES Components [Member]      
Related Party Transaction, Purchases from Related Party   $ 164,000 $ 106,000
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] | Conmed Linvatec [Member]      
Concentration Risk, Percentage   26.00% 61.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | L3Harris [Member]      
Concentration Risk, Percentage   26.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | RTX Corporation [Member]      
Concentration Risk, Percentage   16.00% 10.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Intracom Defense Electronics [Member]      
Concentration Risk, Percentage   12.00%  
One Security [Member]      
Equity Securities, FV-NI   $ 2,000 $ 628,000
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss   79,000  
Equity Securities, FV-NI, Accumulated Gross Unrealized Gains     376,000
Non-Current Securities [Member]      
Investment Income, Interest   $ 154,000 $ 0