Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 3,359	$ 4,894
Accounts receivable	4,373	484
Inventories	12,931	11,627
Prepaid expenses	2,227	1,531
Section 45Z Production Tax	3,440	5,478
Other current assets	2,798	2,856
Total current assets	29,128	26,870
Property, plant and equipment, net	271,310	219,717
Restricted cash	1,518	2,992
Operating lease right-of-use assets	1,909	2,256
Other assets	8,130	8,006
Total assets	311,995	259,841
Liabilities, Current [Abstract]
Accounts payable	36,622	23,418
Current portion of long term debt	316,427	279,143
Short term borrowings	60,497	38,726
Other current liabilities	26,278	29,971
Total current liabilities	439,824	371,258
Liabilities, Noncurrent [Abstract]
EB-5 notes	13,000	16,000
Other long term debt	45,523	47,895
Series A preferred units	123,558	126,910
Other long term liabilities	4,297	4,609
Total long-term liabilities	186,378	195,414
Stockholders' deficit:
Common stock, $0.001 par value; 140,000 authorized; 73,098 and 66,189 shares issued and outstanding each period, respectively	73	66
Additional paid-in capital	360,146	340,402
Accumulated deficit	(665,812)	(639,943)
Accumulated other comprehensive loss	(8,614)	(7,356)
Total stockholders' deficit	(314,207)	(306,831)
Total liabilities and stockholders' deficit	$ 311,995	$ 259,841

Amount of production tax credit as of balance sheet date.

No definition available.

Name:	amtx_ProductionTaxCredit
Namespace Prefix:	amtx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).