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Transactions with Related Parties - Statements of Operations (Table) (Details) (USD $)
In Thousands, unless otherwise specified
0 Months Ended 12 Months Ended
Nov. 25, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Related Party Transaction [Line Items]        
Voyage expenses   $ 1,997sblk_RelatedPartiesCommissionsFees $ 773sblk_RelatedPartiesCommissionsFees $ 1,134sblk_RelatedPartiesCommissionsFees
Management fee expense   158us-gaap_ProfessionalAndContractServicesExpense 0us-gaap_ProfessionalAndContractServicesExpense 0us-gaap_ProfessionalAndContractServicesExpense
Management fee income   2,346us-gaap_ManagementFeesBaseRevenue 1,598us-gaap_ManagementFeesBaseRevenue 478us-gaap_ManagementFeesBaseRevenue
Oceanbulk Maritime S.A. (d)        
Related Party Transaction [Line Items]        
Commission on sale of vessel   0sblk_CommisionsOnSaleOfAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
(90)sblk_CommisionsOnSaleOfAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
(91)sblk_CommisionsOnSaleOfAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
Voyage expenses 2,077sblk_RelatedPartiesCommissionsFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
     
Management fee expense   (158)us-gaap_ProfessionalAndContractServicesExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
0us-gaap_ProfessionalAndContractServicesExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
0us-gaap_ProfessionalAndContractServicesExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
Management fee income   188us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
0us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
0us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_OceanbulkMaritimeMember
Executive directors (b)        
Related Party Transaction [Line Items]        
Consultancy fees   (1,516)us-gaap_ServiceManagementCosts
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ExecutiveOfficerMember
(528)us-gaap_ServiceManagementCosts
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ExecutiveOfficerMember
(453)us-gaap_ServiceManagementCosts
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ExecutiveOfficerMember
Non-executive directors (b)        
Related Party Transaction [Line Items]        
Compensation   (191)sblk_NonExecutiveDirectorsCompensation
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ManagementMember
(114)sblk_NonExecutiveDirectorsCompensation
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ManagementMember
(124)sblk_NonExecutiveDirectorsCompensation
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ManagementMember
Combine Marine Ltd (c)        
Related Party Transaction [Line Items]        
Office rent   (42)us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_CombineMarineLtdMember
(41)us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_CombineMarineLtdMember
(40)us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_CombineMarineLtdMember
Interchart (a)        
Related Party Transaction [Line Items]        
Voyage expenses   (1,997)sblk_RelatedPartiesCommissionsFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_InterchartShippingMember
(773)sblk_RelatedPartiesCommissionsFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_InterchartShippingMember
(1,134)sblk_RelatedPartiesCommissionsFees
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_InterchartShippingMember
Managed Vessels of Oceanbulk Shipping LLC (e)        
Related Party Transaction [Line Items]        
Management fee income   1,390us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ManagedVesselsOceanBulkShippingMember
823us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ManagedVesselsOceanBulkShippingMember
204us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ManagedVesselsOceanBulkShippingMember
Product Shipping & Trading S.A. (f)        
Related Party Transaction [Line Items]        
Management fee income   62us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ProductShippingTradingMember
242us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ProductShippingTradingMember
0us-gaap_ManagementFeesBaseRevenue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ProductShippingTradingMember
Excel Vessel Bridge Facility (i)        
Related Party Transaction [Line Items]        
Interest expense   $ (1,659)us-gaap_InterestExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ExcelVesselBridgeFacilityIIIMember
$ 0us-gaap_InterestExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ExcelVesselBridgeFacilityIIIMember
$ 0us-gaap_InterestExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sblk_ExcelVesselBridgeFacilityIIIMember