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Aemetis Biogas LLC - Series A Preferred Financing and Variable Interest Entity (Details Narrative) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 20, 2018 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Totaling Of Series A Preferred Stock Unit |  | $ 54,900,000 |  |
Total Assets Of Abgl Company |  | 57,800,000 |  |
Long-term Liabilities |  | 50,300,000 |  | $ 45,000,000.0
Accretion Expense |  | 4,600,000 |  | 3,200,000
Preferred Units Redeemed Value |  | 30,000 |  |
Preferred Units Issued Value |  | $ 3,100,000 |  |
Preferred Stock Unit |  | 626,000 |  |
Preferred Units Series A [Member] | Second Tranche [Member] |  |  |  |
Stock Redeemed Or Called During Period Shares |  | 20,000 | 20,000 |
Reduced Redemption Shares |  | 20,000 |  |
Preferred Stock Unit |  | $ 89,700,000 |  | $ 30,000
Reduced Redemption Shares Amount |  | 14,000,000.0 |  |
Preferred Units Series A [Member] | First Tranche [Member] |  |  |  |
Preferred Stock Amunt |  | $ 16,000,000.0 |  |
Preferred Shares Issued |  | 2,800,000 |  |
Series A Preferred Stocks [Member] |  |  |  |
Conversion Of Common Stock Into Shares | 1,200,000 |  |  |
Common Stock Shares | 6,000,000 |  |  |
Per Shares | $ 5.00 |  |  |
Proceeds From Preferred Stock | $ 30,000,000 |  |  |
Additional Common Unit | 5,000,000 |  |  |
Property Tax Accrual Amount |  | $ 0 |  |
Preferred Units Series A [Member] |  |  |  |
Preferred Stock Unit |  | 3,200,000 |  |
Conversion Of Common Stock Into Shares | 1,200,000 |  |  |
Common Stock Shares | 6,000,000 |  |  |
Redemption Unit Value |  | $ 3,000,000 |  |
Total Amount | $ 30,000,000 |  |  |
Shares Percentage | 75.00% | 75.00% |  |
Redemption Payments Increased Rate |  | 100.00% |  |
Increases Payment Of Cash Flow |  | 100% |  |
Preferred Stock Shares Authorized | 11,000,000 | 11,000,000 |  |
Preference Payments | $ 0.50 |  |  |
Maximum Number Of Shares | 5,000,000 |  |  |
Redemption Per Share | $ 15 |  |  |
Cash Flow Amount | 90,000,000 |  |  |
Paid Fees | $ 900,000 |  |  |
Increases Conversion Of Common Stock Units | 5,000,000 |  |  |
Initial Rate Free Cash Flows |  | 75.00% |  |

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