Advances Percentage For Vessels Under Construction Acquisitions

No definition available.

Name:	gass_AdvancesPercentageForVesselsUnderConstructionAcquisitions
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- Definition

Fixed management fee per day per vessel for vessels under time or voyage charters.

+ References

No definition available.

+ Details

Name:	gass_ManagementFeePerDayPerVessel
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fixed management fee per day per vessel for vessels under bareboat charters.

+ References

No definition available.

+ Details

Name:	gass_ManagementFeePerDayPerVesselUnderBareboatCharter
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Net (gain)/loss on sale of vessels

+ References

No definition available.

+ Details

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Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Definition

In the context of an agreement with a related party, this element represents the fixed fee per vessel for the construction of vessels.

+ References

No definition available.

+ Details

Name:	gass_RelatedPartyTransactionVesselConstructionFeePerVessel
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	gass_SalesandPurchaseBrokerCommissionFee
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Sales and Purchase Broker Commission Fee Percentage

+ References

No definition available.

+ Details

Name:	gass_SalesAndPurchaseBrokerCommissionFeePercentage
Namespace Prefix:	gass_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Voyage Expenses paid to related parties consisting of commissions on charter hire agreements, which are paid for by the company, regardless of the charter type.

+ References

No definition available.

+ Details

Name:	gass_VesselBrokerageCommission
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This item represents the commission as a percentage paid to Managers on charter hire agreements.

+ References

No definition available.

+ Details

Name:	gass_VesselBrokerageCommissionPercentage
Namespace Prefix:	gass_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Vessel Purchase Price

+ References

No definition available.

+ Details

Name:	gass_VesselPurchasePrice
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ 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 210.5-02.19(a))

-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 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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.(k)(1))

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

+ Details

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

+ Details

Name:	us-gaap_GeneralAndAdministrativeExpense
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with collection, whether partial or full, of long-term loans to a related party. Alternate caption: Proceeds from Advances to Affiliates.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support.

+ References

No definition available.

+ Details

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

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-07.1(c))

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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Period Type:	duration

Note 3 - Transactions with Related Parties (Details)	12 Months Ended			0 Months Ended	12 Months Ended										1 Months Ended		0 Months Ended	12 Months Ended
Note 3 - Transactions with Related Parties (Details)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2014 Collection of Advance Payments [Member] Affiliated Company [Member] USD ($)	Dec. 31, 2014 Capitalized Construction Supervision Fees [Member] Brave [Member] USD ($)	Dec. 31, 2014 Reimbursed Compensation Manager [Member] USD ($)	Dec. 31, 2013 Reimbursed Compensation Manager [Member] USD ($)	Dec. 31, 2012 Reimbursed Compensation Manager [Member] USD ($)	Dec. 31, 2014 Office Space Rent [Member] USD ($)	Dec. 31, 2013 Office Space Rent [Member] USD ($)	Dec. 31, 2012 Office Space Rent [Member] USD ($)	Dec. 31, 2014 Emihar Petroleum Inc [Member] USD ($)	Dec. 31, 2013 Emihar Petroleum Inc [Member] USD ($)	Dec. 31, 2012 Emihar Petroleum Inc [Member] USD ($)	Sep. 28, 2012 Affiliated Company [Member]	Aug. 22, 2012 Affiliated Company [Member] USD ($)	May 26, 2014 Brave [Member] EUR (€)	Dec. 31, 2014 Additional Charge Per Day For Superintendent Engineers Onboard The Vessel [Member] USD ($)	Dec. 31, 2014 Superintendent Fees [Member] USD ($)	Dec. 31, 2013 Superintendent Fees [Member] USD ($)	Dec. 31, 2012 Superintendent Fees [Member] USD ($)	Dec. 31, 2014 Commission Expenses [Member] USD ($)	Dec. 31, 2012 Commission Expenses [Member] USD ($)	Dec. 31, 2014 Vessels' Operating Expenses [Member] USD ($)	Dec. 31, 2013 Vessels' Operating Expenses [Member] USD ($)
Note 3 - Transactions with Related Parties (Details) [Line Items]
Management Fee Per Day Per Vessel	$ 440gass_ManagementFeePerDayPerVessel
Management Fee Per Day Per Vessel Under Bareboat Charter	125
Vessel Brokerage Commission Pecentage	1.25%	1.25%	1.25%
Vessel Brokerage Commission	1,613,421gass_VesselBrokerageCommission	1,482,764gass_VesselBrokerageCommission	1,472,410gass_VesselBrokerageCommission
Professional and Contract Services Expense	5,501,675	4,807,010	4,315,720
Related Party Transaction, Expenses from Transactions with Related Party																		500	167,000	151,000	175,500
Sales and Purchase Broker Commission Fee Percentage	1.00%
Salesand Purchase Broker Commission Fee	984,355	723,500	634,479
Net (Gain) Loss on Sale of Vessels																						285,000	192,000
General and Administrative Expense	3,150,929us-gaap_GeneralAndAdministrativeExpense	2,816,397us-gaap_GeneralAndAdministrativeExpense	2,838,759us-gaap_GeneralAndAdministrativeExpense			1,317,237	1,245,766	1,552,541
Due to Related Parties, Current	4,941,896us-gaap_DueToRelatedPartiesCurrent	5,941,043us-gaap_DueToRelatedPartiesCurrent
Related Party Transaction, Amounts of Transaction	3,932,352	3,933,149	1,741,802		984,204				76,788	78,070	76,420													104,476	104,476
Revenue from Related Parties	9,814,000us-gaap_RevenueFromRelatedParties	9,814,000us-gaap_RevenueFromRelatedParties	4,364,992us-gaap_RevenueFromRelatedParties									9,814,000	9,814,000	4,364,992
Vessel Purchase Price																96,000,000
Advances Percentage For Vessels Under Construction Acquisitions															20.00%
Proceeds from Collection of Long-term Loans to Related Parties				10,044,799
Related Party Transaction, Vessel Construction Fee, Per Vessel (in Euro)																	€ 390,000