v3.26.1
Note 15 - Financial Instruments - Recurring Fair Value Measurements (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Derivative $ 84,510 $ 120,675
Derivative asset, current portion 84,510 120,675
Derivative 0 144,523
Freight Forward Agreements [Member]    
Derivative 84,510 0
Derivative asset, current portion 84,510 0
Freight Forward Agreements [Member] | Fair Value, Recurring [Member]    
Derivative 84,510  
Derivative asset, current portion 84,510  
Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative 84,510  
Derivative asset, current portion 84,510  
Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative 0  
Derivative asset, current portion 0  
Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative 0  
Derivative asset, current portion 0  
Interest Rate Swap [Member]    
Derivative 0 120,675
Derivative asset, current portion $ 0 120,675
Interest Rate Swap [Member] | Fair Value, Recurring [Member]    
Derivative   120,675
Derivative asset, current portion   120,675
Derivative   144,523
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative   0
Derivative asset, current portion   0
Derivative   0
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative   120,675
Derivative asset, current portion   120,675
Derivative   144,523
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative   0
Derivative asset, current portion   0
Derivative   $ 0