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Fair value of Above Market Acquired Time Charters - Amount per Vessel (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 11, 2014 | Dec. 31, 2011
Fair value of above market acquired time charter |  |  |  |  |
Fair value of above market acquired time charter | $ 11,908 sblk_FairValueOfAboveMarketAcquiredTimeCharter | $ 7,978 sblk_FairValueOfAboveMarketAcquiredTimeCharter |  | $ 1,967 sblk_FairValueOfAboveMarketAcquiredTimeCharter |
Amortization | 6,113 sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter | 6,352 sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter | 6,369 sblk_AmortizationOfFairValueOfAboveMarketAcquiredTimeCharter |  |
Accumulated amortization of above market time charters | 21,200 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | 15,087 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  |  |
Amortization weighted-average period | 9 months 18 days |  |  |  |
Star Big and Star Mega |  |  |  |  |
Fair value of above market acquired time charter |  |  |  |  |
Fair value of above market acquired time charter |  |  |  |  | 23,065 sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBigAndStarMegaMember
Madredeus and Amami |  |  |  |  |
Fair value of above market acquired time charter |  |  |  |  |
Fair value of above market acquired time charter | 1,967 sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_MadredeusAndAmamiMember |  |  |  |
Christine, Sandra and Lowlands Beilun |  |  |  |  |
Fair value of above market acquired time charter |  |  |  |  |
Fair value of above market acquired time charter | $ 8,076 sblk_FairValueOfAboveMarketAcquiredTimeCharter / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_ChristineSandraAndLowlandsBeilunMember |  |  |  |

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- Definition The amortization of the asset arising from the market value of the time charter assumed from a vessel acquisition. + References No definition available. + Details
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- Definition The asset arising from the market value of the time charter contract assumed from a vessel acquisition. + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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