XML 61 R45.htm IDEA: XBRL DOCUMENT v3.21.1

Transactions With Related Parties - Additional Information (Detail)				12 Months Ended
	Jun. 05, 2020 USD ($)	Apr. 01, 2020 EUR (€)	Jan. 25, 2016 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Feb. 13, 2020
Related Party Transaction [Line Items]
Management fee, per day, per vessel				$ 280
Due to related parties, current, total				$ 4,659,861	$ 7,043,121
Equity Method Investment Ownership Percentage				50.10%	50.10%		51.00%
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities				$ 1,841,380	$ 4,958,250
Eco Alice [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party	$ 24,000,000
Eco Texiana [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party	$ 19,500,000
The Manager [Member]
Related Party Transaction [Line Items]
Management fee, per day, per vessel				440
Management fee, per day, per vessel, under bareboat charter				$ 125
Crew management fee, per month, per vessel						$ 2,500
Sales and purchase broker commission fee, percentage				1.00%
Due to related parties, current, total				$ 3,701,903	2,084,871
Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities				957,958	$ 4,958,250
The Manager [Member] | Additional Charge Per Day When Visits Exceed Five Days In Twelve Month Period [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party				$ 500
Brave [Member] | Vessel Construction Fee Per Vessel [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party | €			€ 490,000
Brave [Member] | Capitalized Construction Supervision Fees [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party | €		€ 390,000

X

- Definition

Crew management fee per month per vessel.

+ References

No definition available.

+ Details

Name:	gass_CrewManagementFeePerMonthPerVessel
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Management fee per day per vessel.

+ References

No definition available.

+ Details

Name:	gass_ManagementFeePerDayPerVessel
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Management fee per day per vessel under bareboat charter.

+ References

No definition available.

+ Details

Name:	gass_ManagementFeePerDayPerVesselUnderBareboatCharter
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Proceeds From Unconsolidated Joint Ventures And Subsidiaries Classified As Financing Activities

+ References

No definition available.

+ Details

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

X

- Definition

Sales and purchase broker commission fee percentage.

+ References

No definition available.

+ Details

Name:	gass_SalesAndPurchaseBrokerCommissionFeePercentage
Namespace Prefix:	gass_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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/disclosureRef
-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 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120395691&loc=d3e23780-122690

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DueToRelatedPartiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=gass_EcoAliceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=gass_EcoTexianaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gass_TheManagerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=gass_AdditionalChargePerDayWhenVisitsExceedFiveDaysInTwelveMonthPeriodMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gass_BraveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=gass_VesselConstructionFeePerVesselMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=gass_CapitalizedConstructionSupervisionFeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: