XML 44 R30.htm IDEA: XBRL DOCUMENT v3.22.0.1

Outstanding Warrants (Tables)

12 Months Ended

Dec. 31, 2021

Outstanding Warrants

Weighted average assumptions

Description		For the year ended December 31,
		2021				2020				2019
Dividend-yield			0	%			0	%			0	%
Risk-free interest rate			0.21	%			0.84	%			2.13	%
Expected volatility			136.16	%			108.8	%			103.0	%
Expected life (years)			2				2				2
Exercise price per share		$	0.01			$	0.01			$	0.01
Market value per share on grant date		$	9.92			$	0.81			$	0.73
Fair value per share on grant date		$	9.91			$	0.80			$	0.72

Schedule of warrant activity

		Warrants Outstanding & Exercisable				Weighted - Average Exercise Price				Average Remaining Term in Years
Outstanding December 31, 2018			95			$	2.59				6.95
Granted			227				0.01
Exercised			(227	)			0.01
Outstanding December 31, 2019			95			$	2.59				5.95
Granted			227				0.01
Exercised			(227	)			0.01
Outstanding December 31, 2020			95			$	2.59				4.95
Granted			292				0.01
Exercised			(332	)			0.32
Outstanding December 31, 2021			55			$	2.59				3.95

X

- Definition

Custom Element.

+ References

No definition available.

+ Details

Name:	amtx_ScheduleOfWarrantActivity
Namespace Prefix:	amtx_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

Name:	us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_WarrantsAndRightsNoteDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration