Amount of advance payment for vessel disposal.

No definition available.

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

- Definition

Aggregate consideration transferred for the purchase of vessels.

+ References

No definition available.

+ Details

Name:	sblk_AggregateConsiderationTransferredForPurchaseVessels
Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The date of the vessel delivery to the Company.

+ References

No definition available.

+ Details

Name:	sblk_DeliveryDateVessel
Namespace Prefix:	sblk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

- Definition

The vessel's capacity in deadweight tonnage.

+ References

No definition available.

+ Details

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

- Definition

Number of vessels acquired.

+ References

No definition available.

+ Details

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

- Definition

Number of vessels delivered.

+ References

No definition available.

+ Details

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

- Definition

Number of vessels sold.

+ References

No definition available.

+ Details

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

- Definition

The carrying value of the Company's vessels, which did not meet the criteria as held for sale as of the balance sheet date, but met these criteria after the balance sheet date and before the issuance of the Company's financial statements.

+ References

No definition available.

+ Details

Name:	sblk_VesselsSubsequentlyRecognizedAsHeldForSale
Namespace Prefix:	sblk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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

- Definition

Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DisposalDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The fair value of assets acquired in noncash investing or financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 225
-Section 45
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68048823&loc=d3e92212-112881

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Impairment
-URI http://asc.fasb.org/extlink&oid=6515133

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

+ Details

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

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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

- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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=66902209&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=66902209&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

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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

- Definition

The portion of the deferred gain that was recognized in the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 35
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35688829&loc=d3e50609-112754

+ Details

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

- Definition

The date of the transaction involving the sale of the property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6456341&loc=d3e50796-112755

+ Details

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

- Definition

The amount of the gain recorded in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6456126&loc=d3e49567-112750

+ Details

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

- Definition

The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

+ References

+ Details

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

- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

+ References

Reference 1: 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of stock issued pursuant to acquisitions during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarSiriusStarVega2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarVega2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_StarSirius2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_MergerPappasTransaction2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sblk_GargantuaAndGoliathAndMaharajMember
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_PropertyPlantAndEquipmentByTypeAxis=sblk_DeepBlueMember
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_LineOfCreditFacilityAxis=sblk_NIBCFacilityMember
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_PropertyPlantAndEquipmentByTypeAxis=sblk_StarAntaresMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

Vessels and Other Fixed Assets, Net (Details) $ in Thousands			2 Months Ended				5 Months Ended	6 Months Ended			7 Months Ended		8 Months Ended		9 Months Ended	12 Months Ended
	Jan. 08, 2016 USD ($)	Jan. 06, 2016 USD ($)	Mar. 02, 2016 USD ($)	Feb. 26, 2016 USD ($)	Mar. 13, 2015 USD ($)	Feb. 27, 2015 USD ($)	May 27, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jul. 15, 2015 USD ($)	Jul. 11, 2014 USD ($) shares	Aug. 07, 2015 USD ($)	Jul. 22, 2015 USD ($)	Aug. 31, 2016 USD ($)	Aug. 19, 2014 USD ($) shares	Oct. 09, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Vessels [Line Items]
Payments to acquire property plant and equipment																$ 396,154	$ 473,917	$ 518,447
Loss on sale of vessel																15,248	20,585	0
Impairment loss of disposed assets																18,537	219,400
Impairment loss of assets held for use																10,684	102,578
Impairment loss																29,221	321,978	0
Amortization of deferred gain																75	22	0
Repayments of debt																181,201	$ 244,529	173,986
Vessels subsequently recognized as held for sale																$ 8,000
BNP $32,480 Facility
Vessels [Line Items]
Amount drawn down																		32,480
DVB $31,000 Deep Blue Facility
Vessels [Line Items]
Amount drawn down							$ 28,680
Star Sirius and Star Vega
Vessels [Line Items]
Number of vessels acquired																2
Star Vega
Vessels [Line Items]
Gross daily charter rate													$ 15
Delivery date																February 13, 2014
DWT																98,681
Star Sirius
Vessels [Line Items]
Gross daily charter rate								$ 15
Delivery date																March 7, 2014
DWT																98,681
Merger and Pappas Transaction
Vessels [Line Items]
Number of vessels acquired										13
Fair value of vessels acquired										$ 426,000
Peloreus
Vessels [Line Items]
Delivery date																July 22, 2014
DWT																182,496
Payments to acquire property plant and equipment																		34,625
Peloreus \| Deutsche Bank AG $85,000 Facility
Vessels [Line Items]
Amount drawn down																		32,500
Leviathan
Vessels [Line Items]
Delivery date																September 19, 2014
DWT																182,511
Payments to acquire property plant and equipment																		34,625
Leviathan \| Deutsche Bank AG $85,000 Facility
Vessels [Line Items]
Amount drawn down																		32,500
Excel Vessels
Vessels [Line Items]
Contracted purchase price																		$ 501,535
Number of vessels acquired														34
Number of vessels delivered																	6	28
Shares to acquire vessels \| shares														5,983,462			851,577	5,131,885
Payments to acquire property plant and equipment														$ 288,391			$ 39,475	$ 248,751
Held in escrow for Heron vessels
Vessels [Line Items]
Shares to acquire vessels \| shares										423,141
Heron vessels
Vessels [Line Items]
Delivery date																December 5, 2014
Number of vessels acquired																2
Payments to acquire property plant and equipment										$ 25,000
Value of common shares issued for acquisition of Heron Vessels										$ 25,080
Star Kim
Vessels [Line Items]
Disposal date																Jan. 21, 2015
Number of vessels sold																1
Advances from sale of vessel																		1,100
Indomitable
Vessels [Line Items]
Delivery date																Jan. 08, 2015
Payments to acquire property plant and equipment																		$ 34,942
Honey Badger
Vessels [Line Items]
Delivery date																February 27, 2015
DWT																61,320
Payments to acquire property plant and equipment						$ 19,422
Wolverine
Vessels [Line Items]
Delivery date																February 27, 2015
DWT																61,292
Payments to acquire property plant and equipment						$ 19,422
Honey Badger and Wolverine \| Sinosure Facility
Vessels [Line Items]
Amount drawn down					$ 38,162
Idee Fixe
Vessels [Line Items]
Delivery date																March 25, 2015
DWT																63,458
Roberta
Vessels [Line Items]
Delivery date																March 31, 2015
DWT																63,426
Laura
Vessels [Line Items]
Delivery date																April 7, 2015
DWT																63,399
Kaley
Vessels [Line Items]
Delivery date																June 26, 2015
DWT																63,283
Gargantua
Vessels [Line Items]
Delivery date																April 2, 2015
DWT																209,529
Goliath
Vessels [Line Items]
Delivery date																July 15, 2015
DWT																209,537
Maharaj
Vessels [Line Items]
Delivery date																July 15, 2015
DWT																209,472
Gargantua, Goliath and Maharaj
Vessels [Line Items]
Payments to acquire property plant and equipment									$ 113,046
Gargantua, Goliath and Maharaj \| DNB-SEB-CEXIM $227,500 Facility
Vessels [Line Items]
Amount drawn down									$ 93,000
Deep Blue
Vessels [Line Items]
Delivery date																May 27, 2015
Payments to acquire property plant and equipment							$ 34,982
Star Aquarius
Vessels [Line Items]
Delivery date																July 22, 2015
DWT																60,916
Payments to acquire property plant and equipment												$ 20,359
Star Aquarius \| NIBC $32,000 Facility
Vessels [Line Items]
Amount drawn down												$ 15,237
Star Pisces
Vessels [Line Items]
Delivery date																August 7, 2015
DWT																60,916
Payments to acquire property plant and equipment											$ 20,351
Star Pisces \| NIBC $32,000 Facility
Vessels [Line Items]
Amount drawn down											$ 15,237
Star Antares
Vessels [Line Items]
Delivery date																October 9, 2015
DWT																61,258
Payments to acquire property plant and equipment															$ 19,770
Star Antares \| Sinosure Facility
Vessels [Line Items]
Amount drawn down															$ 16,738
Vessels sales agreements in 2015 and 2016
Vessels [Line Items]
Number of vessels sold																15
Number of vessels delivered																4	11
Repayments of debt																$ 130,062
Maiden Voyage
Vessels [Line Items]
DWT																		58,722
Leasing arrangements, Term of time charter contract																2 years
Sale Leaseback Transaction, Date																Sep. 15, 2015
Sale Leaseback Transaction, Deferred Gain, Gross																$ 148
Sale Leaseback Transaction, Deferred Gain, Net																51	$ 126
Amortization of deferred gain																$ 75	$ 22
Star Lutas
Vessels [Line Items]
Delivery date																January 6, 2016
DWT																61,347
Payments to acquire property plant and equipment		$ 19,770
Star Lutas \| Sinosure Facility
Vessels [Line Items]
Amount drawn down		$ 14,813
Kennadi
Vessels [Line Items]
Delivery date																January 8, 2016
DWT																63,262
Payments to acquire property plant and equipment	$ 21,229
Kennadi \| Sinosure Facility
Vessels [Line Items]
Amount drawn down	$ 14,478
Star Poseidon
Vessels [Line Items]
Delivery date																February 26, 2016
DWT																209,475
Payments to acquire property plant and equipment				$ 33,390
Star Poseidon \| DNB-SEB-CEXIM $227,500 Facility
Vessels [Line Items]
Amount drawn down				$ 23,400
Mackenzie
Vessels [Line Items]
Delivery date																March 2, 2016
DWT																63,226
Payments to acquire property plant and equipment			$ 18,221
Mackenzie \| Sinosure Facility
Vessels [Line Items]
Amount drawn down			$ 12,720
Star Marisa
Vessels [Line Items]
Delivery date																March 11, 2016
DWT																207,709
Star Libra
Vessels [Line Items]
Delivery date																June 6, 2016
DWT																207,765