Capital Leased Assets and Capital Lease Obligations (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Capital Leased Assets And Capital Lease Obligations Details Narrative
Capital lease obligations, Gross	$ 363,835	$ 233,624
Capital lease obligation maturity	2024
Interest expense incurred on capital leases	$ 18,915	17,131	$ 14,793
Capital leased assets [Abstract]:
Sale Leaseback Transaction, Other Information	Between January and April 2014, the Company took delivery of the newbuild vessels MSC Azov, MSC Ajaccio and MSC Amalfi. Upon the delivery of each vessel, the Company agreed with a financial institution to refinance the then outstanding balance of the loans relating to these vessels by entering into a ten-year sale and leaseback transaction for each vessel. The shipbuilding contracts were novated to the financial institution for an amount of $85,572 each. On July 6, 2016 and July 15, 2016 the Company agreed with a financial institution to refinance the then outstanding balance of the loans relating to the MSC Athos and the MSC Athens, by entering into a seven-year sale and leaseback transaction for each vessel.
Vessel's sale and leaseback price			85,572
Prepaid lease rentals	$ 26,390	0	49,817
Net settlements of interest rate swaps qualifying for cash flow hedge	1,076	0	6,604
Additions to Capital leased assets	151,848		256,716
Capital leased assets, depreciation	9,942	7,581	$ 6,169
Capital leased assets accumulated depreciation	23,692	13,750
Capital leased assets	$ 384,872	$ 242,966

Amounts transferred to Prepaid lease rentals at the inception of the capital lease transactions

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Capital leased assets value at the inception of the capital lease transactions

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The amounts reclassified from Net settlements on interest rate swaps qualifying for hedge accounting to Prepaid lease rentals

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No definition available.

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Total capital lease obligation remaining balance as at the reporting period end, excluding any interest.

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The year the capital lease obligations mature.

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No definition available.

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Amount after accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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No definition available.

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Interest expense incurred on finance leases during the reporting period and is included in the income statement.

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The per vessel price for the 3 vessels (MSC Azov, MSC Ajaccio and MSC Amalfi), due to the sale and leaseback transaction.

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No definition available.

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The expense charged against earnings for the periodic recognition of capitalized leases. This element may apply to energy companies that lease mineral producing properties and to other enterprises that capitalize property, plant, or equipment obtained through capital leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45031-112735

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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The accumulated depreciation and amortization related to the asset(s) sold in connection with the property sold to another party and leased back to the seller.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 40
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-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51843-112757

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-Publisher FASB
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-Section 55
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-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51840-112757

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A description of any other information relevant to the transaction involving the sale of property to another party and the lease of the property back to the seller.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694

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