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Basis of Presentation and General Information (Details) (USD $)	0 Months Ended		6 Months Ended	12 Months Ended
	Feb. 25, 2014	Oct. 15, 2012	Jul. 11, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Vessels [Line Items]
Date of Incorporation				Dec. 13, 2006
Reverse stock split ratio		15-for-1				15-for-1
Daily Management Fee				$ 750sblk_DailyManagementFee
Percentage of equity which relates to amount of loan converted			50.00%sblk_PercentageOfEquityAcquiredUponConversionDebt
Shares to acquire business	22,598us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued		54,104,200us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Average closing market price			$ 11.854sblk_AverageClosingMarketPrice
Write-off of deferred fiance costs			3,003,000us-gaap_WriteOffOfDeferredDebtIssuanceCost
Fair value of above market acquired time charter			1,967,000sblk_FairValueOfAboveMarketAcquiredTimeCharter	11,908,000sblk_FairValueOfAboveMarketAcquiredTimeCharter	7,978,000sblk_FairValueOfAboveMarketAcquiredTimeCharter
Acquisition related costs			9,364,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
Share based compensation			1,808,000us-gaap_ShareBasedCompensation	5,834,000us-gaap_ShareBasedCompensation	1,488,000us-gaap_ShareBasedCompensation	1,546,000us-gaap_ShareBasedCompensation
Payments to acquire property plant and equipment				518,447,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	127,814,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	91,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Merger with Oceanbulk
Vessels [Line Items]
Shares to acquire business			48,395,766us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_MergerWithOceanbulkMember
Heron vessels
Vessels [Line Items]
Outstanding loan receivable convertible into 50% of equity interests			23,680,000us-gaap_NotesAndLoansReceivableGrossNoncurrent / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeronVesselsIIMember
Value of common shares issued for acquisition of Heron Vessels			25,080,000us-gaap_StockIssuedDuringPeriodValueAcquisitions / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeronVesselsIIMember
Payments to acquire property plant and equipment			25,000,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeronVesselsIIMember
Held in escrow for Heron vessels
Vessels [Line Items]
Shares to acquire vessels			2,115,706us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HeldInEscrowForHeronVesselsMember
Pappas companies
Vessels [Line Items]
Shares to acquire business			3,592,728us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_PappasCompaniesIIMember
Vessels under construction
Vessels [Line Items]
Fair value adjustment recognized			158,523,000us-gaap_AssetsFairValueAdjustment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_VesselsUnderConstructionMember
Vessels in operations
Vessels [Line Items]
Fair value adjustment recognized			79,465,000us-gaap_AssetsFairValueAdjustment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_VesselsInOperationsMember
ProForma adjustments
Vessels [Line Items]
Interest expense				1,816,000us-gaap_InterestExpense / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ProFormaAdjustmentsMember	1,412,000us-gaap_InterestExpense / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ProFormaAdjustmentsMember
Acquisition related costs				12,757,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ProFormaAdjustmentsMember
ABYO Gwyneth
Vessels [Line Items]
DWT				82,790sblk_VesselCapacity / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ABYOGwynethMember
ABYO Angelina
Vessels [Line Items]
DWT				82,981sblk_VesselCapacity / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ABYOAngelinaMember
ABYO Audrey
Vessels [Line Items]
DWT				175,125sblk_VesselCapacity / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ABYOAudreyMember
ABYO Oprah
Vessels [Line Items]
DWT				82,551sblk_VesselCapacity / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ABYOOprahMember
Significant charterers
Vessels [Line Items]
Accounts receivable				$ 248,000us-gaap_AccountsReceivableNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_SignificantCharterersMember

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