XML 61 R48.htm IDEA: XBRL DOCUMENT
v3.19.1

Advances for Vessels Under Construction and Acquisitions - Summary of Advances for Vessels Under Construction and Acquisitions (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Investments in and Advances to Affiliates, Schedule of Investments [Abstract] |  |  |
Beginning balance | $ 61,577,818 | $ 55,785,801 |
Advances for vessels under construction and acquisitions | 102,597,821 | 57,805,820 |
Capitalized interest | 0 | 813,423 | $ 1,660,802
Capitalized expenses | 5,155,821 | 2,475,138 |
Vessels delivered | $ (169,331,460) | (55,302,364) |
Ending balance |  | $ 61,577,818 | $ 55,785,801

X
- Definition Advances during period. + References No definition available. + Details
Name: | gass_AdvancesDuringPeriod
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Advances for vessels under construction and acquisitions. + References No definition available. + Details
Name: | gass_AdvancesForVesselsUnderConstructionAndAcquisitions
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Capitalized expenses. + References No definition available. + Details
Name: | gass_CapitalizedExpenses
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Vessels delivered. + References No definition available. + Details
Name: | gass_VesselsDelivered
Namespace Prefix: | gass_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest capitalized during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestCostsCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration