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Gain on Time Charter Agreement Termination (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		56 Months Ended		0 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Oct. 29, 2013 Star Sigma	Jan. 04, 2012 Star Sigma	Jan. 04, 2012 Star Sigma - Amount received in cash	Jan. 04, 2012 Star Sigma - Value of fuels received as compensation
Fair Value of Above/Below Market Acquired Time Charters and Gain/Loss on Time Charter Agreement Termination [Line Items]
Gain on time charter agreement termination	$ 0	$ 6,454			$ 5,734	$ 720
Metric tons of fuel oil				1,027
Gross daily charter rate			$ 38

X

- Definition

The quantity of oil fuel that was delivered with the delivery of the vessel, in metric tons.

+ References

No definition available.

+ Details

Name:	sblk_FuelQuantity
Namespace Prefix:	sblk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The gain recognized on termination of a contract.

+ References

No definition available.

+ Details

Name:	sblk_GainOnTimeCharterAgreementTermination
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

- Details

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