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Advances for Vessels Under Construction And Acquisition Of Vessels, Newbuildings (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Newbuilding Vessels
Vessels [Line Items]
Newbuildings periodic installments, next twelve months	$ 617,986us-gaap_UnrecordedUnconditionalPurchaseObligationDueInNextRollingTwelveMonths / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_NewbuildingVesselsMember
Newbuildings periodic installments, 2016	141,080us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRollingYearTwo / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_NewbuildingVesselsMember
Total aggregate remaining contracted price plus agreed extras	$ 759,066sblk_TotalContractualPurchaseObligation / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_NewbuildingVesselsMember
Number of newbuilding contracts	24sblk_NumberOfNewbuildingContracts / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_NewbuildingVesselsMember
Merger and Pappas Transaction
Vessels [Line Items]
Number of newbuilding contracts	15sblk_NumberOfNewbuildingContracts / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_MergerPappasTransaction2Member

X

- Definition

The number of new buildings contracts.

+ References

No definition available.

+ Details

Name:	sblk_NumberOfNewbuildingContracts
Namespace Prefix:	sblk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The total amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation to be paid within and after one year from the balance sheet date.

+ References

No definition available.

+ Details

Name:	sblk_TotalContractualPurchaseObligation
Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationDueInNextRollingTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRollingYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_MergerPappasTransaction2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_NewbuildingVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: