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Voyage and Vessel operating expenses - Vessel operating expenses (Table) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Voyage And Vessel Operating Expenses
Crew wages and related costs	$ 133,769	$ 126,180	$ 109,311
Insurances	18,753	14,981	13,002
Maintenance, repairs, spares and stores	51,210	44,646	37,947
Lubricants	14,625	11,823	10,669
Tonnage taxes (Note 14)	3,838	2,634	2,103
Pre-delivery and Pre-joining expenses	174	3,104	(0)
Miscellaneous	6,247	5,293	5,511
Total vessel operating expenses	$ 228,616	$ 208,661	$ 178,543

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The cost of lubricants consumed during the period.

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The pre-delivery and pre-joining expenses incurred during the period.

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The tonnage taxes for the period.

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Costs of maintenance supplies used that are directly related to goods produced and sold, or services rendered, during the reporting period.

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The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

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Amount of expense for salary and wage arising from service rendered by nonofficer employee. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.

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