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Note N - Equity (Details Textual)
 9 Months Ended 12 Months Ended
Jun. 18, 2021
shares
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
$ / shares
shares
Preferred Stock, Shares Authorized (in shares)     5,000,000    
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 1    
Share-Based Payment Arrangement, Expense | $     $ 243,250 $ 265,732  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture | $     $ 18,006 $ 39,007  
Warrants and Rights Outstanding, Term (Year)     5 years    
Share Price (in dollars per share) | $ / shares     $ 1.71 $ 3 $ 10.62
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares)     3,007    
Measurement Input, Price Volatility [Member]          
Warrants and Rights Outstanding, Measurement Input     2.45    
Warrant Inducement Agreement [Member]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     1,030,556    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 1.85    
Proceeds from Issuance of Warrants | $   $ 1,900,000 $ 1,900,000    
Series A Warrants [Member]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     1,030,556    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 1.85    
Series B Warrants [Member]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     1,030,556    
Director [Member]          
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)     12,048 3,078  
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture | $     $ 18,005 $ 39,007  
Restricted Stock [Member]          
Share-Based Payment Arrangement, Expense | $     $ 224,470 $ 225,487  
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)     178,963 16,404  
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited (in shares)     9,168 3,752  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)     3 years    
In The Money Options [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares)     0 0 0
Swivel Secure Europe [Member]          
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)     2.641 17,478  
Share-Based Payment Arrangement, Expense | $     $ 775 $ 4,343  
Employee Stock Purchase Plan [Member]          
Common Stock, Capital Shares Reserved for Future Issuance (in shares) 43,834        
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent 85.00%