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Inventories (Table) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Inventory Disclosure [Abstract] |  |
Lubricants | $ 12,071 | $ 7,604
Bunkers | 15,365 | 11,741
Total | $ 27,436 | $ 19,345

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