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Transactions With Related Parties - Capitalized Expenses (Table) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Advances for vessels under construction and acquisition of vessels and other assets |  |
Commision fee for newbuilding vessels (d) | $ 454,612 us-gaap_ConstructionInProgressGross | $ 67,932 us-gaap_ConstructionInProgressGross
Oceanbulk Maritime S.A. (d) |  |
Advances for vessels under construction and acquisition of vessels and other assets |  |
Commision fee for newbuilding vessels (d) | $ 1,038 us-gaap_ConstructionInProgressGross / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = sblk_OceanbulkMaritimeMember | $ 519 us-gaap_ConstructionInProgressGross / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = sblk_OceanbulkMaritimeMember

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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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