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Commitments and Contingencies - Legal (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			8 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 05, 2012	Dec. 31, 2011	Mar. 31, 2013	Oct. 14, 2011
Vessels [Line Items]
Trade accounts receivable, net	$ 24,765us-gaap_AccountsReceivableNetCurrent	$ 3,203us-gaap_AccountsReceivableNetCurrent
Bad debt expense	215us-gaap_ProvisionForDoubtfulAccounts	0us-gaap_ProvisionForDoubtfulAccounts	0us-gaap_ProvisionForDoubtfulAccounts
Other operational gain	10,003us-gaap_OtherIncome	3,787us-gaap_OtherIncome	3,507us-gaap_OtherIncome
Exchange rate EUR/USD	1.22us-gaap_ForeignCurrencyExchangeRateTranslation1
Due to related parties	2,166us-gaap_DueToRelatedPartiesCurrent	559us-gaap_DueToRelatedPartiesCurrent
Star Epsilon And Star Kappa (Chartered by Ishar Overseas)
Vessels [Line Items]
Legal proceeds				5,000us-gaap_ProceedsFromLegalSettlements / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonAndStarKappaMember
Bad debt expense					1,949us-gaap_ProvisionForDoubtfulAccounts / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonAndStarKappaMember
Other operational gain		2,500us-gaap_OtherIncome / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonAndStarKappaMember	2,514us-gaap_OtherIncome / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarEpsilonAndStarKappaMember
Star Gamma And Star Cosmo (Chartered by Korea Line Corporation)
Vessels [Line Items]
Trade accounts receivable, net							6,839us-gaap_AccountsReceivableNetCurrent / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaStarCosmoMember
Bad debt expense					498us-gaap_ProvisionForDoubtfulAccounts / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaStarCosmoMember
Other operational gain		177us-gaap_OtherIncome / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaStarCosmoMember	157us-gaap_OtherIncome / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarGammaStarCosmoMember
Star Polaris
Vessels [Line Items]
Revenue loss due to engine failure						(2,343)sblk_RevenueLossDueToEngineFailure / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarPolarisMember
Off Hire Days						142
Heron vessels
Vessels [Line Items]
Loan amount	25,311us-gaap_DebtInstrumentFaceAmount / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeronVesselsIIMember
Due to related parties	$ 1,689us-gaap_DueToRelatedPartiesCurrent / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeronVesselsIIMember

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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Cash received for the settlement of litigation during the current period.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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