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Advances for vessels under construction and acquisition of vessels (Details)	Jun. 30, 2016
Five newbuilding vessels
Vessels [Line Items]
Number of newbuilding contracts	5

X

- Definition

The number of newbuildings contracts acquired.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

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