v3.26.1
Note 4 - General Credit Agreement (Details Textual) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Jan. 31, 2024
Feb. 28, 2021
Line of Credit Facility, Remaining Borrowing Capacity $ 0   $ 0    
Long-Term Line of Credit $ 0 $ 0      
Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity       $ 5,000,000 $ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage       3.00%