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Advances for Vessels Under Construction And Acquisition Of Vessels (Table) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Vessels [Line Items]
Pre-delivery yard installments	$ 518,447us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	$ 127,814us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	$ 91us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Capitalized interest and finance costs	(7,838)us-gaap_InterestCostsCapitalized	(633)us-gaap_InterestCostsCapitalized	0us-gaap_InterestCostsCapitalized
Total	454,612us-gaap_ConstructionInProgressGross	67,932us-gaap_ConstructionInProgressGross
24 new building vessels
Vessels [Line Items]
Pre-delivery yard installments	299,129us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	66,780us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Fair value adjustment (Notes 1 and 5)	137,923us-gaap_AssetsFairValueAdjustment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	0us-gaap_AssetsFairValueAdjustment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Bareboat capital leases - upfront hire & handling fees	31,467sblk_AdvancesForVesselsUnderCapitalLeases / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	0sblk_AdvancesForVesselsUnderCapitalLeases / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Capitalized interest and finance costs	11,696us-gaap_InterestCostsCapitalized / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	633us-gaap_InterestCostsCapitalized / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Other capitalized costs (Note 3)	4,580sblk_OtherCostsCapitalized / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	519sblk_OtherCostsCapitalized / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Advances for secondhand vessels	79us-gaap_PaymentsToAcquireAssetsInvestingActivities / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	0us-gaap_PaymentsToAcquireAssetsInvestingActivities / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Vessels delivered (Note 5)	(30,262)sblk_AdvancesForVesselsUnderConstructionAndAcquisitionOfVesselsVesselsDelivered / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	0sblk_AdvancesForVesselsUnderConstructionAndAcquisitionOfVesselsVesselsDelivered / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember
Total	$ 454,612us-gaap_ConstructionInProgressGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember	$ 67,932us-gaap_ConstructionInProgressGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_TwentyFourNewbuildingVesselsMember

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- Definition

The cash outflow associated with the acquisition of vessels, bareboats, etc.

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The value of vessels under construction delivered in the period.

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Commission fee for new building vessels.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

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Amount of interest capitalized during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829



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-Publisher FASB

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-Section 50

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Aggregate cash payments for a combination of transactions that are classified as investing activities in which assets, which may include securities, other types of investments, or productive assets, are purchased from third-party sellers. This element can be used by entities to aggregate payments for all asset purchases that are classified as investing activities.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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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=6516133



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