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v2.4.1.9

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
--- | --- | --- | --- | --- | --- | --- | ---
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 | $ 440 gass_ManagementFeePerDayPerVessel |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Management Fee Per Day Per Vessel Under Bareboat Charter | 125 gass_ManagementFeePerDayPerVesselUnderBareboatCharter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessel Brokerage Commission Pecentage | 1.25%gass_VesselBrokerageCommissionPercentage | 1.25%gass_VesselBrokerageCommissionPercentage | 1.25%gass_VesselBrokerageCommissionPercentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessel Brokerage Commission | 1,613,421 gass_VesselBrokerageCommission | 1,482,764 gass_VesselBrokerageCommission | 1,472,410 gass_VesselBrokerageCommission |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Professional and Contract Services Expense | 5,501,675 us-gaap_ProfessionalAndContractServicesExpense | 4,807,010 us-gaap_ProfessionalAndContractServicesExpense | 4,315,720 us-gaap_ProfessionalAndContractServicesExpense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_NatureOfExpenseAxis = gass_AdditionalChargePerDayForSuperintendentEngineersOnboardTheVesselMember | 167,000 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_NatureOfExpenseAxis = gass_SuperintendentFeesMember | 151,000 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_NatureOfExpenseAxis = gass_SuperintendentFeesMember | 175,500 us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_NatureOfExpenseAxis = gass_SuperintendentFeesMember |  |  |  |
Sales and Purchase Broker Commission Fee Percentage | 1.00%gass_SalesAndPurchaseBrokerCommissionFeePercentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Salesand Purchase Broker Commission Fee | 984,355 gass_SalesandPurchaseBrokerCommissionFee | 723,500 gass_SalesandPurchaseBrokerCommissionFee | 634,479 gass_SalesandPurchaseBrokerCommissionFee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (Gain) Loss on Sale of Vessels |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 285,000 gass_NetGainLossOnSaleVessels / us-gaap_NatureOfExpenseAxis = gass_CommissionExpensesMember | 192,000 gass_NetGainLossOnSaleVessels / us-gaap_NatureOfExpenseAxis = gass_CommissionExpensesMember |  |
General and Administrative Expense | 3,150,929 us-gaap_GeneralAndAdministrativeExpense | 2,816,397 us-gaap_GeneralAndAdministrativeExpense | 2,838,759 us-gaap_GeneralAndAdministrativeExpense |  |  | 1,317,237 us-gaap_GeneralAndAdministrativeExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_ReimbursedManagerCompensationMember | 1,245,766 us-gaap_GeneralAndAdministrativeExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_ReimbursedManagerCompensationMember | 1,552,541 us-gaap_GeneralAndAdministrativeExpense / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_ReimbursedManagerCompensationMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due to Related Parties, Current | 4,941,896 us-gaap_DueToRelatedPartiesCurrent | 5,941,043 us-gaap_DueToRelatedPartiesCurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 3,932,352 us-gaap_RelatedPartyTransactionAmountsOfTransaction | 3,933,149 us-gaap_RelatedPartyTransactionAmountsOfTransaction | 1,741,802 us-gaap_RelatedPartyTransactionAmountsOfTransaction |  | 984,204 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionAxis = gass_CapitalizedConstructionSupervisionFeesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_BraveMember |  |  |  | 76,788 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_OfficeSpaceRentMember | 78,070 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_OfficeSpaceRentMember | 76,420 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_OfficeSpaceRentMember |  |  |  |  |  |  |  |  |  |  |  |  | 104,476 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_NatureOfExpenseAxis = gass_VesselsOperatingExpensesMember | 104,476 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_NatureOfExpenseAxis = gass_VesselsOperatingExpensesMember
Revenue from Related Parties | 9,814,000 us-gaap_RevenueFromRelatedParties | 9,814,000 us-gaap_RevenueFromRelatedParties | 4,364,992 us-gaap_RevenueFromRelatedParties |  |  |  |  |  |  |  |  | 9,814,000 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_EmiharPetroleumIncMember | 9,814,000 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_EmiharPetroleumIncMember | 4,364,992 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_EmiharPetroleumIncMember |  |  |  |  |  |  |  |  |  |  |
Vessel Purchase Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 96,000,000 gass_VesselPurchasePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_AffiliatedCompanyMember |  |  |  |  |  |  |  |  |
Advances Percentage For Vessels Under Construction Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%gass_AdvancesPercentageForVesselsUnderConstructionAcquisitions / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_AffiliatedCompanyMember |  |  |  |  |  |  |  |  |  |
Proceeds from Collection of Long-term Loans to Related Parties |  |  |  | 10,044,799 us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties / us-gaap_RelatedPartyTransactionAxis = gass_CollectionOfAdvancePaymentsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_AffiliatedCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Vessel Construction Fee, Per Vessel (in Euro) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 390,000 gass_RelatedPartyTransactionVesselConstructionFeePerVessel / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = gass_BraveMember |  |  |  |  |  |  |  |

X
- Definition Advances Percentage For Vessels Under Construction Acquisitions + References No definition available. + Details
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Namespace Prefix: | gass_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Fixed management fee per day per vessel for vessels under time or voyage charters. + References No definition available. + Details
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Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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

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- 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

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- Details
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Namespace Prefix: | gass_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Sales and Purchase Broker Commission Fee Percentage + References No definition available. + Details
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Namespace Prefix: | gass_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- 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

X
- 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

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- 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

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- 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 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 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- 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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- 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
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Namespace Prefix: | us-gaap_
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- 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 Reference 3: 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 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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