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Subsequent Events (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended	2 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 14, 2015	Apr. 03, 2015	Jan. 08, 2015	Feb. 27, 2015	Apr. 02, 2015	Jan. 30, 2015	Mar. 30, 2015	Jul. 31, 2014	Oct. 31, 2014	Dec. 22, 2014	Jun. 26, 2014	Aug. 01, 2013	Dec. 29, 2014	Jan. 01, 2015	Apr. 01, 2015	Mar. 13, 2015	Mar. 06, 2015	Mar. 19, 2015
Subsequent Events [Line Items]
Proceeds from issuance of common stock	$ 0us-gaap_ProceedsFromIssuanceOfCommonStock	$ 150,905,000us-gaap_ProceedsFromIssuanceOfCommonStock	$ 0us-gaap_ProceedsFromIssuanceOfCommonStock
Payments to acquire property plant and equipment	518,447,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	127,814,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	91,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
BNP $32,480 Facility
Subsequent Events [Line Items]
Loan amount											32,500,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_BNPFacilityMember
DVB $24,750 Facility
Subsequent Events [Line Items]
Loan amount												24,750,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_DVBFacilityMember
Sinosure Facility
Subsequent Events [Line Items]
Loan amount													156,453,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_SinosureFacilityMember
CEXIM $57,360 Facility
Subsequent Events [Line Items]
Loan amount														57,360,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_CEXIMFacilityMember
ABN $87,458 Facility
Subsequent Events [Line Items]
Loan amount															34,458,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_ABNFacilityMember
DNB $120,000 Facility
Subsequent Events [Line Items]
Loan amount																120,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = sblk_DNBFacilityMember
Equity Offering
Subsequent Events [Line Items]
Issuance of common stock, shares				49,000,418us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_SubsequentEventTypeAxis = sblk_EquityOfferingMember
Public offering price				$ 5us-gaap_EquityIssuancePerShareAmount / us-gaap_SubsequentEventTypeAxis = sblk_EquityOfferingMember
Proceeds from issuance of common stock				242,211,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_SubsequentEventTypeAxis = sblk_EquityOfferingMember
Excel Vessel Deliveries
Subsequent Events [Line Items]
Payments to acquire property plant and equipment					30,286,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_SubsequentEventTypeAxis = sblk_ExcelVesselDeliveriesMember
Shares to acquire vessels					3,264,726us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_SubsequentEventTypeAxis = sblk_ExcelVesselDeliveriesMember
Sale of Vessels
Subsequent Events [Line Items]
Loan repayments					18,181,000us-gaap_RepaymentsOfBankDebt / us-gaap_SubsequentEventTypeAxis = sblk_SaleVesselsMember
Outsourcing of Certain Procurement Services
Subsequent Events [Line Items]
Procurement services daily fee																	295sblk_ProcurementServicesDailyFee / us-gaap_SubsequentEventTypeAxis = sblk_OutsourcingCertainProcurementServicesMember
Delivery of newbuilding vessels | Indomitable
Subsequent Events [Line Items]
Aggregate acquisition price						34,942,000sblk_VesselAcquisitionContractPrice / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_IndomitableMember / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Debt Instrument Amount Drawn Down						32,480,000sblk_DebtInstrumentAmountDrawnDown / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_IndomitableMember / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Delivery of newbuilding vessels | Honey Badger
Subsequent Events [Line Items]
Payments to acquire property plant and equipment							19,422,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HNNE164Member / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Delivery of newbuilding vessels | Wolverine
Subsequent Events [Line Items]
Delivery Date							Feb. 27, 2015
Payments to acquire property plant and equipment							19,422,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HNNE165Member / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Delivery of newbuilding vessels | Gargantua
Subsequent Events [Line Items]
Debt Instrument Amount Drawn Down																		32,400,000sblk_DebtInstrumentAmountDrawnDown / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HNNE166Member / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Payments to acquire property plant and equipment								37,682,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HNNE166Member / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Delivery of newbuilding vessels | Honey Badger And Wolverine
Subsequent Events [Line Items]
Debt Instrument Amount Drawn Down																			38,162,000sblk_DebtInstrumentAmountDrawnDown / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_HoneyBadgerWolverineMember / us-gaap_SubsequentEventTypeAxis = sblk_DeliveryNewbuildingVesselsMember
Release of Heron shares
Subsequent Events [Line Items]
Shares to acquire vessels									2,115,706us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_SubsequentEventTypeAxis = sblk_ReleaseHeronSharesMember
DVB committed term-sheet
Subsequent Events [Line Items]
Loan amount																				31,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_SubsequentEventTypeAxis = sblk_DVBCommittedTermSheetMember
BNP committed term-sheet
Subsequent Events [Line Items]
Loan amount																			39,500,000us-gaap_DebtInstrumentFaceAmount / us-gaap_SubsequentEventTypeAxis = sblk_BNPCommittedTermSheetMember
DNB - SEB - CEXIM committed term-sheet
Subsequent Events [Line Items]
Loan amount																					$ 227,500,000us-gaap_DebtInstrumentFaceAmount / us-gaap_SubsequentEventTypeAxis = sblk_DNB-SEB-CEXIMCommittedTermSheetMember
Restructuring Agreement - Commerzbank $120,000 and $26,000 Facilities
Subsequent Events [Line Items]
Restructuring agreement description										Under the supplemental agreement, the Company agreed to (i) prepay Commerzbank AG $3,000 ,(ii) amend some of the financial covenants and iii) change the repayment date for the Commerzbank $26,000 Facility from September 7, 2016 to July 31, 2015.

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