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Transactions with Related Parties - Additional Information - Other (Details)		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Combine Marine Ltd. USD ($)	Jun. 30, 2013 Combine Marine Ltd. EUR (€)	Sep. 28, 2012 Maiden Voyage LLC USD ($)	Oct. 19, 2012 OOCAPE1 Holdings LLC USD ($)	Jun. 07, 2013 Product Shipping & Trading S.A. (g) USD ($)
Related Party Transaction [Line Items]
Rent expense per month		$ 3,300	€ 2,500
Daily fixed management fee received per vessel				$ 750	$ 750	$ 130
US Dollar to Euro exchange rate	1.3

X

- Definition

The fee rate charged daily, persuant to the management agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of monthly rental.

+ References

No definition available.

+ Details

Name:	sblk_RentExpensePerMonth
Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
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Period Type:	instant

X

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration