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Basis of Presentation and General Information - Results of operations since the acquisition date (Table) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Voyage revenues $ 145,041sblk_VoyageRevenues $ 68,296sblk_VoyageRevenues $ 85,684sblk_VoyageRevenues
Operating income/(loss) (1,432)us-gaap_OperatingIncomeLoss 8,343us-gaap_OperatingIncomeLoss (306,970)us-gaap_OperatingIncomeLoss
Net (loss) / income (11,723)us-gaap_NetIncomeLoss 1,850us-gaap_NetIncomeLoss (314,521)us-gaap_NetIncomeLoss
Oceanbulk      
Voyage revenues 39,585sblk_VoyageRevenues
/ us-gaap_BusinessAcquisitionAxis
= sblk_OceanbulkIMember		    
Operating income/(loss) (645)us-gaap_OperatingIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= sblk_OceanbulkIMember		    
Net (loss) / income (4,822)us-gaap_NetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= sblk_OceanbulkIMember		    
Pappas Companies      
Voyage revenues 2,249sblk_VoyageRevenues
/ us-gaap_BusinessAcquisitionAxis
= sblk_PappasCompaniesMember		    
Operating income/(loss) 111us-gaap_OperatingIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= sblk_PappasCompaniesMember		    
Net (loss) / income $ (213)us-gaap_NetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= sblk_PappasCompaniesMember