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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) gallon in Thousands, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 29, 2019 | Jul. 26, 2019 shares | Dec. 31, 2020 USD ($) gallon shares | Dec. 31, 2019 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Reverse stock split, conversion ratio | 0.125 |  |  |
Right-of-use assets | $ |  |  | $ 786 | $ 965
Operating lease, liabilities | $ |  |  | $ 852 |
Dilutive EPS exclude warrants to purchase of common stock (in shares) | shares |  |  | 62,500 |
Bomay |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of interest in a joint venture |  |  | 40.00% |
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 |  |  | 100 |
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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