XML 31 R61.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 13 - Equity Compensation Plan (Details) (USD $)
12 Months Ended 90 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Nov. 20, 2017
Nov. 20, 2016
Nov. 20, 2015
Dec. 31, 2007
Dec. 31, 2014
Nov. 20, 2014
Nov. 22, 2012
Note 13 - Equity Compensation Plan (Details) [Line Items]                    
Dividends $ 0us-gaap_Dividends $ 0us-gaap_Dividends $ 0us-gaap_Dividends              
Share-based Compensation 357,967us-gaap_ShareBasedCompensation 292,628us-gaap_ShareBasedCompensation 31,268us-gaap_ShareBasedCompensation              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 1,609,707us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized             1,609,707us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 324 days                  
Scenario, Forecast [Member] | Non-Vested Restricted Shares [Member]                    
Note 13 - Equity Compensation Plan (Details) [Line Items]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in Shares)       57,678us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
57,678us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
115,357us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
       
The Plan [Member]                    
Note 13 - Equity Compensation Plan (Details) [Line Items]                    
Common Stock Reserved Percentage             10.00%gass_CommonStockReservedPercentage
/ us-gaap_AwardTypeAxis
= gass_ThePlanMember
     
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)               555,479us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= gass_ThePlanMember
   
Non-Vested Restricted Shares [Member]                    
Note 13 - Equity Compensation Plan (Details) [Line Items]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)                 230,713us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
74,761us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)                 $ 7.58us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
$ 7.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 3 years  
Share-based Compensation 357,967us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
292,628us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
31,268us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember
             
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 681,073us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= gass_NonVestedRestrictedSharesMember