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Fair Value Measurements - Fair Value Measurements (Table) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 10, 2013
Fair Value Measurements [Line Items]
Vessel impairment loss	$ 0us-gaap_AssetImpairmentCharges	$ 0us-gaap_AssetImpairmentCharges	$ 303,219us-gaap_AssetImpairmentCharges
Star Cosmo
Fair Value Measurements [Line Items]
Vessel impairment loss			45,838us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoMember
Star Delta
Fair Value Measurements [Line Items]
Vessel impairment loss			35,836us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarDeltaMember
Star Epsilon
Fair Value Measurements [Line Items]
Vessel impairment loss			36,756us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonMember
Star Gamma
Fair Value Measurements [Line Items]
Vessel impairment loss			36,033us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaMember
Star Kappa
Fair Value Measurements [Line Items]
Vessel impairment loss			39,115us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarKappaMember
Star Omicron
Fair Value Measurements [Line Items]
Vessel impairment loss			39,841us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarOmicronMember
Star Theta
Fair Value Measurements [Line Items]
Vessel impairment loss			36,784us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarThetaMember
Star Zeta
Fair Value Measurements [Line Items]
Vessel impairment loss			29,811us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarZetaMember
Star Sigma
Fair Value Measurements [Line Items]
Vessel value				8,354sblk_VesselNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarSigmaMember
Vessel impairment loss			3,205us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarSigmaMember
Significant Other Observable Inputs (Level 2)
Fair Value Measurements [Line Items]
Vessel value			123,500sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) | Star Cosmo
Fair Value Measurements [Line Items]
Vessel value			14,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoMember
Significant Other Observable Inputs (Level 2) | Star Delta
Fair Value Measurements [Line Items]
Vessel value			12,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarDeltaMember
Significant Other Observable Inputs (Level 2) | Star Epsilon
Fair Value Measurements [Line Items]
Vessel value			13,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonMember
Significant Other Observable Inputs (Level 2) | Star Gamma
Fair Value Measurements [Line Items]
Vessel value			14,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaMember
Significant Other Observable Inputs (Level 2) | Star Kappa
Fair Value Measurements [Line Items]
Vessel value			13,500sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarKappaMember
Significant Other Observable Inputs (Level 2) | Star Omicron
Fair Value Measurements [Line Items]
Vessel value			17,750sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarOmicronMember
Significant Other Observable Inputs (Level 2) | Star Theta
Fair Value Measurements [Line Items]
Vessel value			15,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarThetaMember
Significant Other Observable Inputs (Level 2) | Star Zeta
Fair Value Measurements [Line Items]
Vessel value			15,250sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarZetaMember
Significant Other Observable Inputs (Level 2) | Star Sigma
Fair Value Measurements [Line Items]
Vessel value			$ 9,000sblk_VesselNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarSigmaMember

X

- Definition

The carrying amount of the vessel.

+ References

No definition available.

+ Details

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Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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