Note 8 - Vessels, Net (Details Textual) $ in Thousands |
Jun. 30, 2025
USD ($)
|
Dec. 31, 2024 |
|---|---|---|
| Carrying Capacity of Vessels at Period End (TEU) | 512,989 | 512,989 |
| Number of Vessels Provided as Collaterals to Secure Loans | 54 | |
| Carrying Value of Vessels Provided as Collaterals to Secure Loans | $ 1,870,162 | |
| Number of vessels acquired under SPA | 4 | |
| Number of Unencumbered Vessels | 5 | |
| Polar Brasil [Member] | ||
| Carrying Capacity of Vessels at Period End (TEU) | 3,800 |