v3.26.1
Note 6 - Concentrations -10-Q (Details Textual) - Customer Concentration Risk [Member] - Accounts Receivable [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Customer A [Member]      
Accounts Receivable, after Allowance for Credit Loss $ 566,000 $ 179,000  
Concentration Risk, Percentage 77.00% 29.00% 0.00%
Customer J [Member]      
Accounts Receivable, after Allowance for Credit Loss $ 172,000    
Concentration Risk, Percentage 23.00%    
Customer B [Member]      
Accounts Receivable, after Allowance for Credit Loss   $ 86,000  
Concentration Risk, Percentage   14.00%  
Customer F [Member]      
Accounts Receivable, after Allowance for Credit Loss   $ 179,000  
Concentration Risk, Percentage   29.00% 34.00%
Customer H [Member]      
Accounts Receivable, after Allowance for Credit Loss   $ 179,000  
Concentration Risk, Percentage   29.00%