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Commitments and Contingencies - Contractual Obligations (Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Future, minimum, non-cancellable charter revenue(1)
Lease Commitments
2015	$ 65,327us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
2016	8,565us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
2017	0us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
2018	0us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
2019	0us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
2020 and thereafter	0us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
Total	73,892us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable / us-gaap_OtherCommitmentsAxis = sblk_FutureMinimumNonCancellableCharterRevenueMember
Office rent
Lease Commitments
2015	(108)us-gaap_ContractualObligationDueInNextTwelveMonths / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
2016	(108)us-gaap_ContractualObligationDueInSecondYear / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
2017	(108)us-gaap_ContractualObligationDueInThirdYear / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
2018	(105)us-gaap_ContractualObligationDueInFourthYear / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
2019	(97)us-gaap_ContractualObligationDueInFifthYear / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
2020 and thereafter	(422)us-gaap_ContractualObligationDueAfterFifthYear / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
Total	(948)sblk_ContractualObligationDue / us-gaap_OtherCommitmentsAxis = sblk_OfficeRentMember
Bareboat capital leases - upfront hire & handling fees
Lease Commitments
2015	(36,986)us-gaap_ContractualObligationDueInNextTwelveMonths / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
2016	(1,980)us-gaap_ContractualObligationDueInSecondYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
2017	0us-gaap_ContractualObligationDueInThirdYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
2018	0us-gaap_ContractualObligationDueInFourthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
2019	0us-gaap_ContractualObligationDueInFifthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
2020 and thereafter	0us-gaap_ContractualObligationDueAfterFifthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
Total	(38,966)sblk_ContractualObligationDue / us-gaap_OtherCommitmentsAxis = sblk_BareboatCapitalLeasesMember
Bareboat commitments charter hire(2)
Lease Commitments
2015	(9,563)us-gaap_ContractualObligationDueInNextTwelveMonths / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
2016	(32,953)us-gaap_ContractualObligationDueInSecondYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
2017	(40,004)us-gaap_ContractualObligationDueInThirdYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
2018	(40,004)us-gaap_ContractualObligationDueInFourthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
2019	(43,231)us-gaap_ContractualObligationDueInFifthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
2020 and thereafter	(370,036)us-gaap_ContractualObligationDueAfterFifthYear / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
Total	(535,791)sblk_ContractualObligationDue / us-gaap_OtherCommitmentsAxis = sblk_BareboatCommitmentsCharterHireMember
Total
Lease Commitments
2015	18,670us-gaap_ContractualObligationDueInNextTwelveMonths / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
2016	(26,476)us-gaap_ContractualObligationDueInSecondYear / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
2017	(40,112)us-gaap_ContractualObligationDueInThirdYear / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
2018	(40,109)us-gaap_ContractualObligationDueInFourthYear / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
2019	(43,328)us-gaap_ContractualObligationDueInFifthYear / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
2020 and thereafter	(370,458)us-gaap_ContractualObligationDueAfterFifthYear / us-gaap_OtherCommitmentsAxis = sblk_TotalMember
Total	$ (501,813)sblk_ContractualObligationDue / us-gaap_OtherCommitmentsAxis = sblk_TotalMember

X

- Definition

Amount of contractual obligation for the construction of newbuilding vessels.

+ References

No definition available.

+ Details

Name:	sblk_ContractualObligationDue
Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInThirdYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=sblk_BareboatCapitalLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=sblk_BareboatCommitmentsCharterHireMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=sblk_FutureMinimumNonCancellableCharterRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=sblk_OfficeRentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=sblk_TotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: