Vessels and other fixed assets, net (Table) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2012	Dec. 31, 2011
Vessels and other fixed assets, net (Abstract)
Vessels	$ 772,982	$ 876,778
Other fixed assets	642	587
Impairment charge	0	(62,020)
Total cost	773,624	815,345
Accumulated depreciation	(165,386)	(176,813)
Vessels and other fixed assets, net	$ 608,238	$ 638,532

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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