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Transactions With Related Parties - Additional Information - Interchart (Details) In Thousands, except Share data, unless otherwise specified	0 Months Ended		4 Months Ended	6 Months Ended
	Feb. 25, 2014 USD ($)	Feb. 25, 2014 EUR (€)	Mar. 31, 2015 USD ($)	Jul. 11, 2014	Dec. 31, 2014
Transactions with Related Parties [Abstract]
Payment to acquire business	$ 200us-gaap_PaymentsToAcquireBusinessesGross
Shares to acquire business	22,598us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	22,598us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued		54,104,200us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Percentage of ownership in Interchart acquired	33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage	33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
Annual lump sum fee	610sblk_ServicesAgreementAnnualLumpFeeRemuneration	500sblk_ServicesAgreementAnnualLumpFeeRemuneration
Exchange rate EUR/USD					1.22us-gaap_ForeignCurrencyExchangeRateTranslation1
Monthly lump sum fee			$ 275sblk_ServicesAgreementMonthlyLumpFeeRemuneration
Fair value per share transferred	$ 14.51us-gaap_BusinessAcquisitionSharePrice

X

- Definition

Annual lump fee payable to Interchart, as part of the Services Agreement for brokering and commercial services.

+ References

No definition available.

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X

- Definition

Monthly lump fee payable to Interchart, as part of the Services Agreement for brokering and commercial services.

+ References

No definition available.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)(4)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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X

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- 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

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X

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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