v3.26.3
Note 5 - Related Party Transactions (Details Textual) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2021
Dec. 31, 2025
Oct. 13, 2023
Related Party [Member]          
Notes and Loans Payable $ 181,743     $ 627,231  
Sentinel [Member]          
Related Party Transaction, Commission on Premium, Maximum, Percentage     5.00%    
Technomar [Member]          
Related Party Transaction, Amounts of Transaction per Crew Member per Month     $ 50    
Ergina Shipping Ltd. [Member]          
Related Party Transaction, Amounts of Transaction 7,500 $ 7,500      
Related Party Contract, Annual Proceeds         $ 15,000
Related Party Management Fees [Member]          
Vessel Management Fees 2,082,405 2,182,187      
Annual Compensation [Member] | Eurobulk Ltd. [Member]          
Related Party Transaction, Amounts of Transaction 740,000 727,500      
Vessel Sales [Member] | Eurochart [Member]          
Related Party Transaction, Commission, Percentage     1.00%    
Charter Revenues [Member] | Eurochart [Member]          
Related Party Transaction, Amounts of Transaction 403,181 267,942      
Related Party Transaction, Commission, Percentage     1.25%    
Commission of Purchase Price Paid by Seller of Vessel [Member] | Eurochart [Member]          
Related Party Transaction, Commission, Percentage     1.00%    
Commission In Connection With Sale of Vessel [Member] | Eurochart [Member] | M/V “Tasos” Vessels [Member]          
Related Party Transaction, Amounts of Transaction 50,200        
Crew Fees [Member] | Sentinel [Member]          
Related Party Transaction, Amounts of Transaction 43,598 50,423      
Crew Fees [Member] | Technomar [Member]          
Related Party Transaction, Amounts of Transaction $ 85,000 $ 98,773