15. Subsequent Events	12 Months Ended
Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Subordinated Notes On January 1, 2018, the two accredited investors Subordinated Notes’ maturity was extended until the earlier of (i) June 30, 2018; (ii) completion of an equity financing by AAFK or Aemetis in an amount of not less than $25 million; (iii) the completion of an Initial Public Offering by AAFK or Aemetis; or (iv) after the occurrence of an Event of Default, including failure to pay interest or principal when due and breaches of note covenants. A 10 percent cash extension fee was paid by adding the fee to the balance of the new Note and 113 thousand in common stock warrants were granted with a term of two years and an exercise price of $0.01 per share. Third Eye Capital Advance On February 27, 2018, a Promissory Note (the “Feb 2018 Note”, and together with the Original Third Eye Capital Notes, the “Third Eye Capital Notes”) for $2.1 million was advanced by Third Eye Capital to Aemetis, Inc., as a short-term credit facility for working capital and other general corporate purposes with an interest rate of 14% per annum maturing on the earliest of (a) closing of any new debt or equity financing, refinancing, or other similar transaction, (b) receipt of proceeds from any sale, merger, equity, or debt financing, refinancing, or other similar transaction from any third party, and (c) April 30, 2018. Third Eye Amendment On March 27, 2018, Third Eye Capital agreed to Limited Waiver and Amendment No. 14 to the Note Purchase Agreement, to: (i) extend the maturity date of the Third Eye Capital Notes two years to April 1, 2020 in exchange for an amendment fee consisting of 6% (3% per year) of the outstanding note balance as an increase in the fee payable in the event of a redemption of the Notes (as defined in the Note Purchase Agreement); (ii) provide that the maturity date may be further extended at our election to April 1, 2021 in exchange for an extension fee of 5%; (iii) provide for an optional waiver of the ratio of note indebtedness covenant until January 1, 2019 with the payment of a waiver fee of $0.25 million; and (iv) and remove the redemption fee described in (i) above from the calculation of the ratio of note indebtedness covenant. As consideration for such amendment and waiver, the borrowers agreed to pay Third Eye Capital an amendment and waiver fee of $0.5 million to be added to the outstanding principal balance of the Revolving Credit Facility. Third Eye Reserve Liquidity Facility On March 27, 2018, Third Eye agreed to a one-year reserve liquidity facility governed by a promissory note, payable in the principal amount of up to six million dollars. Borrowings under the facility are available from March 27, 2018 until maturity on April 1, 2019. Interest on borrowed amounts accrues at a rate of 30% per annum, paid monthly in arrears, or 40% if an event of default has occurred and continues. The outstanding principal balance of the indebtedness evidenced by the promissory note, plus any accrued but unpaid interest and any other sums due thereunder, shall be due and payable in full at the earlier to occur of (a) the closing of any new debt or equity financing, refinancing or other similar transaction between Third Eye Capital or any fund or entity arranged by them and the Company or its affiliates, (b) receipt by the Company or its affiliates of proceeds from any sale, merger, equity or debt financing, refinancing or other similar transaction from any third party and (c) April 1, 2019. The promissory note is secured by liens and security interests upon the property and assets of the Company. If any amounts are drawn under the facility, the Company will pay a non-refundable fee in the amount of $0.2 million, payable from the proceeds of the first drawing under the facility.

15. Subsequent Events

12 Months Ended

Dec. 31, 2017

Subordinated Notes

On January 1, 2018, the two accredited investors Subordinated Notes’ maturity was extended until the earlier of (i) June 30, 2018; (ii) completion of an equity financing by AAFK or Aemetis in an amount of not less than $25 million; (iii) the completion of an Initial Public Offering by AAFK or Aemetis; or (iv) after the occurrence of an Event of Default, including failure to pay interest or principal when due and breaches of note covenants. A 10 percent cash extension fee was paid by adding the fee to the balance of the new Note and 113 thousand in common stock warrants were granted with a term of two years and an exercise price of $0.01 per share.

Third Eye Capital Advance

On February 27, 2018, a Promissory Note (the “Feb 2018 Note”, and together with the Original Third Eye Capital Notes, the “Third Eye Capital Notes”) for $2.1 million was advanced by Third Eye Capital to Aemetis, Inc., as a short-term credit facility for working capital and other general corporate purposes with an interest rate of 14% per annum maturing on the earliest of (a) closing of any new debt or equity financing, refinancing, or other similar transaction, (b) receipt of proceeds from any sale, merger, equity, or debt financing, refinancing, or other similar transaction from any third party, and (c) April 30, 2018.

Third Eye Amendment

On March 27, 2018, Third Eye Capital agreed to Limited Waiver and Amendment No. 14 to the Note Purchase Agreement, to: (i) extend the maturity date of the Third Eye Capital Notes two years to April 1, 2020 in exchange for an amendment fee consisting of 6% (3% per year) of the outstanding note balance as an increase in the fee payable in the event of a redemption of the Notes (as defined in the Note Purchase Agreement); (ii) provide that the maturity date may be further extended at our election to April 1, 2021 in exchange for an extension fee of 5%; (iii) provide for an optional waiver of the ratio of note indebtedness covenant until January 1, 2019 with the payment of a waiver fee of $0.25 million; and (iv) and remove the redemption fee described in (i) above from the calculation of the ratio of note indebtedness covenant. As consideration for such amendment and waiver, the borrowers agreed to pay Third Eye Capital an amendment and waiver fee of $0.5 million to be added to the outstanding principal balance of the Revolving Credit Facility.

Third Eye Reserve Liquidity Facility

On March 27, 2018, Third Eye agreed to a one-year reserve liquidity facility governed by a promissory note, payable in the principal amount of up to six million dollars. Borrowings under the facility are available from March 27, 2018 until maturity on April 1, 2019. Interest on borrowed amounts accrues at a rate of 30% per annum, paid monthly in arrears, or 40% if an event of default has occurred and continues. The outstanding principal balance of the indebtedness evidenced by the promissory note, plus any accrued but unpaid interest and any other sums due thereunder, shall be due and payable in full at the earlier to occur of (a) the closing of any new debt or equity financing, refinancing or other similar transaction between Third Eye Capital or any fund or entity arranged by them and the Company or its affiliates, (b) receipt by the Company or its affiliates of proceeds from any sale, merger, equity or debt financing, refinancing or other similar transaction from any third party and (c) April 1, 2019. The promissory note is secured by liens and security interests upon the property and assets of the Company. If any amounts are drawn under the facility, the Company will pay a non-refundable fee in the amount of $0.2 million, payable from the proceeds of the first drawing under the facility.