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Vessel Operating Expenses - Vessel Operating Expenses (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Vessel Operating Expenses [Abstract] |  |  |
Crew wages and related costs | $ 32,676,466 | $ 34,721,673 | $ 38,454,397
Insurance | 1,939,328 | 2,382,340 | 2,196,444
Repairs and maintenance | 5,480,702 | 5,716,570 | 7,282,481
Spares and consumable stores | 8,048,657 | 8,127,376 | 9,123,975
Miscellaneous expenses | 4,972,345 | 3,996,819 | 4,452,266
Total | $ 53,117,498 | $ 54,944,778 | $ 61,509,563

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- Definition Other vessel operating expenses. + 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 Repairs and maintenance expense. + References No definition available. + Details
Name: | gass_RepairsAndMaintenanceExpense
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Spares and consumable stores expense. + References No definition available. + Details
Name: | gass_SparesAndConsumableStoresExpense
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Vessel operating expenses. + References No definition available. + Details
Name: | gass_VesselOperatingExpensesAbstract
Namespace Prefix: | gass_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Vessel operating expenses including related party + References No definition available. + Details
Name: | gass_VesselOperatingExpensesIncludingRelatedParty
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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