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v2.4.1.9

Commitments and Contingencies (Details) | 12 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended
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Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Mar. 31, 2012 Star Cosmo EUR (€) | Jul. 31, 2011 Star Cosmo USD ($) | Jul. 31, 2011 Star Cosmo EUR (€) | Dec. 31, 2014 Star Cosmo reduced amount USD ($) | Dec. 31, 2014 Star Cosmo reduced amount EUR (€) | Oct. 03, 2014 Star Borealis USD ($) | Jun. 28, 2013 Star Borealis USD ($) | Dec. 31, 2014 Star Borealis USD ($) | Mar. 31, 2015 Finalized fine USD ($) | Mar. 31, 2015 Finalized fine EUR (€)
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash collateral for pollution |  |  |  |  | $ 415,000 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoMember | € 340,000 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoMember | $ 317,000 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoReducedAmountMember | € 260,000 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoReducedAmountMember |  |  |  | $ 73,200 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_FinalizedFineMember | € 60,000 sblk_CashCollateralForPollution / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_FinalizedFineMember
Cash collateral for pollution release |  |  |  | 340,000 sblk_CashCollateralForPollutionRelease / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarCosmoMember |  |  |  |  |  |  |  |  |
Coverage for pollution | 1,000,000,000 sblk_InsuranceCoverageMaximumAmount |  |  |  |  |  |  |  |  |  |  |  |
Charter hire variable portion | 6-month Libor rate of 0.3628% |  |  |  |  |  |  |  |  |  |  |  |
Gross daily charter rate |  |  |  |  |  |  |  |  |  | 24,750 sblk_GrossDailyCharterRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBorealisIIIMember |  |  |
Proceeds received on transfer of claim |  |  |  |  |  |  |  |  | 8,016,000 sblk_ProceedsReceivedOnTransferClaim / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBorealisIIIMember |  |  |  |
Gain on sale of claim |  |  |  |  |  |  |  |  |  |  | 9,337,000 sblk_GainLossOnSaleOfClaim / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBorealisIIIMember |  |
Exinguishment of liability related to amount of fuel and lubricants remaining on board | $ 1,361,000 sblk_GainFromWriteOffLiability | $ 0 sblk_GainFromWriteOffLiability | $ 0 sblk_GainFromWriteOffLiability |  |  |  |  |  |  |  | $ 1,361,000 sblk_GainFromWriteOffLiability / us-gaap_PropertyPlantAndEquipmentByTypeAxis = sblk_StarBorealisIIIMember |  |

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- Definition Cash collateral for environmental polution. + References No definition available. + Details
Name: | sblk_CashCollateralForPollution
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash collateral for environmental polution released after being covered by Protection and Idemnity (P&I) Club insurance. + References No definition available. + Details
Name: | sblk_CashCollateralForPollutionRelease
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The non-cash gain from the write-off of a liability, relevant to operating activities. + References No definition available. + Details
Name: | sblk_GainFromWriteOffLiability
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total amount of gain / (loss) on sale of claim. + References No definition available. + Details
Name: | sblk_GainLossOnSaleOfClaim
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gross daily charter rate. + References No definition available. + Details
Name: | sblk_GrossDailyCharterRate
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum amount of Protection and Indemnity (P&I) insurance coverage for pollution, per vessel per incident. + References No definition available. + Details
Name: | sblk_InsuranceCoverageMaximumAmount
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proceeds received on transfer of claim. + References No definition available. + Details
Name: | sblk_ProceedsReceivedOnTransferClaim
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The reference rate for the variable rate of the lessee's capital lease, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_CapitalLeasesOfLesseeContingentRentalsDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration