Note 3 - Advances for Vessels Under Construction (Details Textual) - USD ($) |
6 Months Ended | 30 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
May 15, 2026 |
Dec. 05, 2025 |
Nov. 03, 2025 |
Oct. 14, 2024 |
|
| Contractual Obligation | $ 131,500,000 | $ 131,500,000 | |||||
| Payments to Acquire Vessels Under Construction | $ 7,105 | $ 703 | $ 14,400,000 | ||||
| Aristeidis Shipping Loan to Finance Hull No XY164 [Member] | CrediaBank SA [Member] | |||||||
| Debt Instrument, Face Amount | $ 26,900,000 | ||||||
| Yannis Navigation and Troboni Shipping Loan, Tranche B [Member] | Eurobank S.A. [Member] | |||||||
| Debt Instrument, Face Amount | $ 26,000,000 | ||||||
| Yannis Navigation and Troboni Shipping Loan, Tranche A [Member] | Eurobank S.A. [Member] | |||||||
| Debt Instrument, Face Amount | $ 13,500,000 | ||||||
| Vessels Under Construction [Member] | |||||||
| Contractual Obligation | $ 71,800,000 | ||||||
| Two Kamsarmax Bulk Carriers [Member] | |||||||
| Contractual Obligation | $ 74,000,000 | ||||||