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Overview and Basis of Presentation - Additional Information (Detail) gallon in Thousands |  |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 30, 2019 USD ($) | Jul. 29, 2019 | Jul. 26, 2019 shares | Nov. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) gallon | Sep. 30, 2018 USD ($) | Aug. 16, 2019 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Reverse stock split, conversion ratio |  | 0.125 |  |  |  |  |
Convertible debt |  |  |  | $ 48,700,000 |  |  |
Convertible debt, exchanged | $ 7,000,000 |  |  | $ 48,700,000 | $ 7,000,000 | $ 0 |
M/G Finance Co., Ltd. | Secured Promissory Note |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 5,000,000
M/G Finance Co., Ltd. | Secured Promissory Note | Secured Debt |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 5,000,000
Share Exchange Agreement | Board of Directors Chairman |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of beneficial ownership |  |  | 88.40% |  |  |  |
Share Exchange Agreement | Stabilis LLC |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of shares of the combined company (in shares) | shares |  |  | 13,178,750 |  |  |  |
PEG Partners LLC | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 80.00% |  |  |  |
American Electric | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of shares issued |  |  | 90.00% |  |  |  |
American Electric | Stabilis LLC | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 100.00% |  |  |  |
American Electric | PEG Partners LLC | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 20.00% |  |  |  |
American Electric | Prometheus Energy Group Inc. | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 100.00% |  |  |  |
AEGIS NG LLC | PEG Partners LLC | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Noncontrolling interest percentage |  |  | 20.00% |  |  |  |
Stabilis LLC | PEG Partners LLC | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 80.00% |  |  |  |
Stabilis Energy, Inc. | American Electric | Share Exchange Agreement |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 100.00% |  |  |  |
Texas |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Daily capacity of production facility in gallons | gallon |  |  |  |  | 120 |  |
Permian Basin |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Daily capacity of production facility in gallons | gallon |  |  |  |  | 25 |  |

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