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Income taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Tonnage taxes | $ 3,717 | $ 1,360 | $ 797
Greece |  |  |
Tonnage taxes | 3,302 | $ 1,260 | $ 668
Cyprus |  |  |
Tonnage taxes | $ 11 |  |

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- Definition The tonnage taxes for the period. + References No definition available. + Details
Name: | sblk_TonnageTax
Namespace Prefix: | sblk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=sblk_GreeceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=sblk_CyprusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |