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Long-term bank loans - Interest and finance costs (Table) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Debt Disclosure [Abstract]
Interest on financing agreements	$ 24,028	$ 33,818
Reclassification adjustments of interest rate swap loss/(gain) transferred to Interest and finance costs from Other Comprehensive Income (Note 12)	998	(492)
Amortization of debt (loan, lease & notes) issuance costs	3,606	3,663
Other bank and finance charges	827	1,392
Interest and finance costs	$ 29,459	$ 38,381

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Amount of interest expense on debt and finance lease liabilities.

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Other bank and financial services costs incurred during the reporting period.

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Amount of amortization expense attributable to debt issuance costs.

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Amount of the cost of borrowed funds accounted for as interest expense.

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The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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