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Fair value of Above Market Acquired Time Charters - Amount per Vessel (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 11, 2014	Dec. 31, 2011
Fair value of above market acquired time charter
Fair value of above market acquired time charter	$ 11,908sblk_FairValueOfAboveMarketAcquiredTimeCharter	$ 7,978sblk_FairValueOfAboveMarketAcquiredTimeCharter		$ 1,967sblk_FairValueOfAboveMarketAcquiredTimeCharter
Amortization	6,113sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter	6,352sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter	6,369sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter
Accumulated amortization of above market time charters	21,200us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization	15,087us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Amortization weighted-average period	9 months 18 days
Star Big and Star Mega
Fair value of above market acquired time charter
Fair value of above market acquired time charter					23,065sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBigAndStarMegaMember
Madredeus and Amami
Fair value of above market acquired time charter
Fair value of above market acquired time charter	1,967sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_MadredeusAndAmamiMember
Christine, Sandra and Lowlands Beilun
Fair value of above market acquired time charter
Fair value of above market acquired time charter	$ 8,076sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ChristineSandraAndLowlandsBeilunMember

X

- Definition

The amortization of the asset arising from the market value of the time charter assumed from a vessel acquisition.

+ References

No definition available.

+ Details

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X

- Definition

The asset arising from the market value of the time charter contract assumed from a vessel acquisition.

+ References

No definition available.

+ Details

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X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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