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Voyage revenues (Table) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 462,721 $ 778,217
Time charters [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 241,378 448,357
Voyage charters [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 219,666 326,323
Pool revenues [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 1,677 $ 3,537