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v3.23.1

Segment information (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) Customer Vessel Segment | Dec. 31, 2021 USD ($) Vessel Customer | Dec. 31, 2020 USD ($) Vessel Customer
Operating Segments [Abstract] |  |  |
Number of operating segments | Segment | 1 |  |
Information About Major Customers [Abstract] |  |  |
Number of vessels in operation | Vessel | 23 | 26 | 27
Shipping revenues | $ 450,381 | $ 295,853 | $ 691,039
Number of major customers | Customer | 5 | 5 | 5
Time Charters [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Number of vessels in operation | Vessel | 5 | 7 | 18
Spot Market [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Number of vessels in operation | Vessel | 18 | 19 | 9
Major Customer [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | $ 223,131 | $ 157,601 | $ 283,042
Percentage of aggregate revenue | 50.00% | 53.00% | 41.00%
Customer One [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | $ 80,198 | $ 41,418 | $ 78,513
Customer Two [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | 68,829 | 35,154 | 57,777
Customer Three [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | 27,443 | 28,322 | 55,371
Customer Four [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | 26,873 | 26,392 | 53,711
Customer Five [Member] |  |  |
Information About Major Customers [Abstract] |  |  |
Shipping revenues | $ 19,788 | $ 26,315 | $ 37,670

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