Common Stock Reserved Percentage

No definition available.

Name:	gass_CommonStockReservedPercentage
Namespace Prefix:	gass_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Share based compensation arrangement by share based payment award options acquired number.

+ References

No definition available.

+ Details

Name:	gass_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAcquiredNumber
Namespace Prefix:	gass_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Share based compensation arrangement by share based payment award options acquired value.

+ References

No definition available.

+ Details

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

- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]

+ References

No definition available.

+ Details

Name:	gass_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsLineItems
Namespace Prefix:	gass_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

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

- Definition

Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481071/942-405-45-2

+ Details

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

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

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

- Definition

Date the equity-based award expires, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputOptionVolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=gass_NonVestedRestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GranteeStatusAxis=us-gaap_ShareBasedPaymentArrangementEmployeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=gass_ThePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=gass_StockOption2007PlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Equity Compensation Plan - Additional Information (Detail) - USD ($)												12 Months Ended
	Dec. 08, 2025	Feb. 21, 2025	Dec. 08, 2024	Apr. 23, 2024	Feb. 21, 2024	Dec. 08, 2023	May 26, 2023	Mar. 24, 2023	Feb. 21, 2023	May 26, 2022	May 26, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 28, 2024	Aug. 03, 2023	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period								449,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value								$ 3.11
Dividends, total												$ 0	$ 0	$ 0
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value												3,599,860	$ 465,773	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding												1.66
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number																250,000
Share-based compensation arrangement by share-based payment award, options, exercisable, intrinsic value																$ 747,500
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period						299,000			250,000		250,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value						$ 3.39			$ 1.47		$ 1.32
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount												$ 1,096,710
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												1 year 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%	50.00%	50.00%		50.00%		50.00%			50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate						51.44%			50.20%		46.75%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term						5 years 9 months			5 years 9 months		5 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate						4.17%			4.06%		0.96%
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date						Dec. 08, 2033			Feb. 21, 2033
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												125,000	125,000	0
Measurement Input, Option Volatility [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term						6 years			6 years		6 years
Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number															125,000
Share based compensation arrangement by share based payment award options acquired number															125,000
Share based compensation arrangement by share based payment award options acquired value															$ 356,250
Non Vested Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period									284,000		343,744	1,566,000		343,744
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value									$ 2.85		$ 2.99	$ 4.83		$ 2.99
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage							50.00%			50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												1,117,000	171,872	343,744			0
Non Vested Restricted Stock [Member] \| Share-Based Payment Arrangement, Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period						833,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value						$ 6.43
Non Vested Restricted Stock [Member] \| Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period				525,247
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%		50.00%	50.00%
Non Vested Restricted Stock [Member] \| Subsequent Event [Member] \| Share-Based Payment Arrangement, Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%		50.00%
Non Vested Restricted Stock [Member] \| General and Administrative Expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Allocated share-based compensation expense, total												$ 317,349	$ 148,280	$ 148,280
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount												$ 5,392,703
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												1 year 10 months 24 days
Restricted Stock [Member] \| General and Administrative Expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Allocated share-based compensation expense, total												$ 2,272,057	$ 462,508	$ 462,508
The Plan Member
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Common stock, reserved percentage												10.00%
The Plan Member \| Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												2,174,365
2007 Plan [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												799,000
2007 Plan [Member] \| Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award Options [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period												555,479