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3us-gaap_PropertyPlantAndEquipmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Vessels [Line Items]2false 4us-gaap_SignificantAcquisitionsAndDisposalsDateOfTransactionForAcquisitionsOrDisposalsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse002012-03-09falsefalsetrue5falsefalsefalse00falsefalsefalse6falsefalsefalse002013-04-10falsefalsetrue7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:dateItemTypedateDate of acquisition or disposal, in CCYY-MM-DD format.No definition available.false0Delivery date3false 4sblk_FuelQuantitysblk_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse667667falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse10271027falsefalsefalsexbrli:integerItemTypeintegerThe quantity of oil fuel that was delivered with the delivery of the vessel, in metric tons.No definition available.false0Metric tons of fuel oil4false 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4us-gaap_AssetImpairmentChargesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse303219000303219falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Vessel impairment loss6false 4sblk_AddressCommissionPercentagesblk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4truetruefalse0.030.03falsefalsefalse5falsetruefalse00falsefalsefalse6truetruefalse0.030.03falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalsenum:percentItemTypepureCommission payable by the shipowner to the charterer, expressed as a percentage of the freight or hire.No definition available.false0Address commission7false 4sblk_BrokerageCommissionPercentagesblk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4truetruefalse0.020.02falsefalsefalse5falsetruefalse00falsefalsefalse6truetruefalse0.010.01falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalsenum:percentItemTypepureThe commission charged by brokers, as a percentage of the agreed price.No definition available.false0Brokerage commission8false 4sblk_VesselNetsblk_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse1115200011152falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse83540008354falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount of the vessel.No definition available.false2Carrying value of vessel9false 4us-gaap_GainLossOnSaleOfPropertyPlantEquipmentus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedTerseLabel1truefalsefalse8100081USD$falsetruefalse2truefalsefalse31640003164USD$falsetruefalse3falsefalsefalse00falsefalsefalse4truefalsefalse31640003164USD$falsetruefalse5falsefalsefalse00falsefalsefalse6truefalsefalse8100081USD$falsetruefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. 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