The aggregate reduction of the purchase price of vessels under construction.

No definition available.

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

- Definition

The maximum amount, agreed under a lease arrangement, to finance construction cost.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ 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 (c)

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

+ Details

Name:	us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Date of acquisition or disposal, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_SignificantAcquisitionsAndDisposalsDateOfTransactionForAcquisitionsOrDisposals
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LeaseAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarNatalieMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarClaudiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_GoliathAndMaharajMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarAquariusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarPiscesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=sblk_DNB-SEB-CEXIMFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=sblk_NIBCFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details) - USD ($) $ in Thousands	6 Months Ended			7 Months Ended			8 Months Ended
Subsequent Events (Details) - USD ($) $ in Thousands	Jul. 15, 2015	Jun. 30, 2015	Jun. 30, 2014	Aug. 07, 2015	Jul. 31, 2015	Jul. 22, 2015	Sep. 02, 2015	Aug. 26, 2015	Aug. 31, 2015
Subsequent Events [Line Items]
Aggregate reduction of the purchase price of certain of the newbuilding vessels					$ 25,828
Payments to acquire property plant and equipment		$ 317,538	$ 74,267
CSSC lease arrangement
Subsequent Events [Line Items]
Lease agreements, maximum amount to finance construction cost									$ 40,000
Star Natalie
Subsequent Events [Line Items]
Delivery Date								Aug. 26, 2015
Star Claudia
Subsequent Events [Line Items]
Delivery Date							Sep. 02, 2015
Goliath (ex -HN 167) and Maharaj (ex -HN 185)
Subsequent Events [Line Items]
Payments to acquire property plant and equipment	$ 75,364
Star Aquarius ( ex-HN 5040)
Subsequent Events [Line Items]
Payments to acquire property plant and equipment						$ 20,359
Star Pisces (ex-HN 5043)
Subsequent Events [Line Items]
Payments to acquire property plant and equipment				$ 20,351
DNB-SEB-CEXIM $227,500 Facility \| Goliath (ex -HN 167) and Maharaj (ex -HN 185)
Subsequent Events [Line Items]
Amount drawn down	$ 60,600
NIBC $32,000 Facility \| Star Aquarius ( ex-HN 5040)
Subsequent Events [Line Items]
Amount drawn down						$ 15,237
NIBC $32,000 Facility \| Star Pisces (ex-HN 5043)
Subsequent Events [Line Items]
Amount drawn down				$ 15,237