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Accounts payable and accrued expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accounts payable and accrued expenses [Abstract]    
Accounts payable $ 2,811 $ 7,913
Accrued interest 719 3,462
Accrued voyage expenses 1,593 8,865
Accrued employee compensation 4,176 2,976
Other [1] 9,204 782
Total accounts payable and accrued expenses [2] $ 18,503 $ 23,998
[1] Other includes accrued operating expenses and accrued capital expenditures in 2020 and accrued operating expenses in 2019.
[2] Amortized cost.