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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 30, 2019 | Aug. 20, 2019 | Jul. 26, 2019 | Nov. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 17, 2018
Members Equity [Line Items] |  |  |  |  |  |  |
Members contribution (in units) |  |  |  | 1,000 |  |  |
Members contribution, value |  |  |  | $ 20,000,000 |  |  |
Convertible debt, exchanged | $ 7,000,000 |  |  | $ 48,700,000 | $ 7,000,000 | $ 0 |
Issuance of common stock in satisfaction of indebtedness (in shares) | 1,470,807 |  |  |  |  |  |
American Electric |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Percentage of outstanding units exchanged |  |  |  |  |  |  | 100.00%
Number of common stock issued under share exchange agreement (in shares) |  |  | 1,466,092 |  |  |  |
Diversenergy, LLC |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Value of shares issued as partial consideration in acquisition |  | $ 3,000,000 |  |  |  |  |
Diversenergy, LLC | Common Stock |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Number of common stock issued under share exchange agreement (in shares) |  | 684,963 |  |  |  |  |
Capital Unit, Class B |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Members contribution (in units) |  |  |  | 2,000 |  |  |
Members contribution, value |  |  |  | $ 20,000,000 |  |  |
Capital Unit, Class B | LNG Investments |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Members contribution (in units) |  |  |  | 2,000 |  |  |
Members contribution, value |  |  |  | $ 20,000,000 |  |  |
Capital Unit, Class A | LNG Investments |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Aggregate number of common units issued in exchange for indebtedness |  |  |  | $ 4,874.28 |  |  |
Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Percentage of number of common stock issued and outstanding under share exchange agreement |  |  | 90.00% |  |  |  |
Share Exchange Agreement | Stabilis LLC |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Number of common stock issued under share exchange agreement (in shares) |  |  | 13,178,750 |  |  |  |
Parent Company | Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Ownership interest |  |  | 100.00% |  |  |  |
Board of Directors Chairman | Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Percentage of beneficial ownership |  |  | 88.40% |  |  |  |
PEG Partners LLC | Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Percentage of outstanding limited liability owned |  |  | 80.00% |  |  |  |
PEG Partners LLC | Parent Company | Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Percentage of outstanding units exchanged |  |  | 100.00% |  |  |  |
Ownership interest |  |  | 20.00% |  |  |  |
American Electric | Parent Company | Share Exchange Agreement |  |  |  |  |  |  |
Members Equity [Line Items] |  |  |  |  |  |  |
Ownership interest |  |  | 100.00% |  |  |  |

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