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Note 18 - Sale and Leaseback of Vessels (Details) (Gas Premiership and Gas Cathar [Member], USD $) | 2 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2014
Gas Premiership and Gas Cathar [Member] |  |
Note 18 - Sale and Leaseback of Vessels (Details) [Line Items] |  |
Sale Leaseback Transaction, Deferred Gain, Gross | $ 780,695 us-gaap_SaleLeasebackTransactionDeferredGainGross / us-gaap_SaleLeasebackTransactionDescriptionAxis = gass_GasPremiershipAndGasCatharMember | $ 780,695 us-gaap_SaleLeasebackTransactionDeferredGainGross / us-gaap_SaleLeasebackTransactionDescriptionAxis = gass_GasPremiershipAndGasCatharMember
Sale Leaseback Transaction, Term of Lease | 4 years |
Sale Leaseback Transaction, Current Period Gain Recognized | 4,954 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized / us-gaap_SaleLeasebackTransactionDescriptionAxis = gass_GasPremiershipAndGasCatharMember |
Sale Leaseback Transaction, Rent Expense |  | $ 325,758 us-gaap_SaleLeasebackTransactionRentExpense / us-gaap_SaleLeasebackTransactionDescriptionAxis = gass_GasPremiershipAndGasCatharMember

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- Details
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Balance Type: | na
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- Definition Represents the term of the lease under a sale leaseback transaction. + References No definition available. + Details
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Namespace Prefix: | gass_
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Balance Type: | na
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- 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
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- 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
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Balance Type: | credit
Period Type: | instant

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- Definition The amount of the current period expense recorded for use of the property in connection with the transaction involving the sale of 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 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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