XML 43 R33.htm IDEA: XBRL DOCUMENT v3.22.2.2

Note 1 - Nature of Activities and Summary of Significant Accounting Policies - Schedule of Dilutive Securities (Details) (Parentheticals) - $ / shares	Sep. 30, 2022	Sep. 30, 2021
Debt with Conversion Feature [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 30	$ 30

X

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=amtx_DebtWithConversionFeatureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: