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Basis of Presentation and General Information - Second-hand Vessels (Table) (Details) | 12 Months Ended
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Dec. 31, 2018
Star Janni (ex - ER Bradenburg) (Note 1 and 19) |
Property, Plant and Equipment [Line Items] |
DWT | 178,978
Year Built | 2010
Delivery Date | 7-Jan-19
Star Marianne (ex - ER Bourgogne) (Note 1 and 19) |
Property, Plant and Equipment [Line Items] |
DWT | 178,906
Year Built | 2010
Delivery Date | 14-Jan-19
Second-hand Vessels |
Property, Plant and Equipment [Line Items] |
DWT | 357,884

X
- Definition The date of the vessel delivery to the Company. + References No definition available. + Details
Name: | sblk_DeliveryDateVessel
Namespace Prefix: | sblk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The vessel's capacity in deadweight tonnage. + References No definition available. + Details
Name: | sblk_VesselCapacity
Namespace Prefix: | sblk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The year that the vessel was built. + References No definition available. + Details
Name: | sblk_VesselYearBuilt
Namespace Prefix: | sblk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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