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Fair Value Measurements - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	0 Months Ended	12 Months Ended
	Dec. 31, 2013	Apr. 28, 2014	Dec. 31, 2014	Oct. 01, 2015	Jul. 01, 2015
Derivative
Number of interest rate derivatives held by the Company	2us-gaap_NumberOfInterestRateDerivativesHeld		9us-gaap_NumberOfInterestRateDerivativesHeld
8% 2019 Notes fair value			$ 37,460us-gaap_NotesPayableFairValueDisclosure
Interest Rate Swap A - fix forward floating interest rate for first tranche of Credit Agricole $70,000 Facility
Derivative
Maturity date	Aug. 31, 2018
Derivative Asset Notional Amount	26,840us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwap1Member
Fixed rate, per annum	1.705%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwap1Member
Interest Rate Swap B - fix forward floating interest rate for second tranche of Credit Agricole $70,000 Facility
Derivative
Maturity date	Nov. 30, 2018
Derivative Asset Notional Amount	28,628us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwap2Member
Fixed rate, per annum	1.72%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwap2Member
Fix forward 50% of floating interest rate for HSH Nordbank AG $35,000 facility
Derivative
Number of interest rate derivatives held by the Company		2us-gaap_NumberOfInterestRateDerivativesHeld / us-gaap_DerivativeByNatureAxis = sblk_FixForwardFloatingInterestRateForLiabilityMember
Maturity date		Sep. 30, 2018
Fixed rate, per annum		1.765%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeByNatureAxis = sblk_FixForwardFloatingInterestRateForLiabilityMember
Goldman Sachs Swaps
Derivative
Number of interest rate derivatives held by the Company			5us-gaap_NumberOfInterestRateDerivativesHeld / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember
Maturity date			Apr. 30, 2018
Derivative Asset Notional Amount			186,307us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember	461,264us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember	186,307us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember
Derivative lower fixed interest rate range					1.79%us-gaap_DerivativeLowerFixedInterestRateRange / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember
Derivative higher fixed interest rate range				2.07%us-gaap_DerivativeHigherFixedInterestRateRange / us-gaap_DerivativeByNatureAxis = sblk_GoldmanSachsSwapsMember
Credit Agricole and HSH Nordbank Swaps
Derivative
Derivative Asset Notional Amount			$ 71,562us-gaap_DerivativeAssetNotionalAmount / us-gaap_DerivativeByNatureAxis = sblk_CreditAgricoleSwapsMember

X

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

High end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Definition

Low end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

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- Definition

Fair value portion of notes payable.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20,22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959



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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

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