It represent for installation cost.

No definition available.

Name:	evtn_InstallationCost
Namespace Prefix:	evtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represent maturity terms.

+ References

No definition available.

+ Details

Name:	evtn_MaturityTerms
Namespace Prefix:	evtn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

It represent of monthly payment for machining equipment.

+ References

No definition available.

+ Details

Name:	evtn_MonthlyPaymentsForMachiningEquipment
Namespace Prefix:	evtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount represents Selling price of equipment.

+ References

No definition available.

+ Details

Name:	evtn_SellingPriceofEquipment
Namespace Prefix:	evtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for acquisition of machinery and equipment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=evtn_CNCMachiningMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	evtn_TypesOfArrangementAxis=evtn_FinancingAgreementMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=evtn_FinancingAgreementMember
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Period Type:

- Details

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EQUIPMENT NOTE PAYABLE (Details Narrative) - USD ($)	1 Months Ended	6 Months Ended
EQUIPMENT NOTE PAYABLE (Details Narrative) - USD ($)	Jul. 31, 2017	Jun. 30, 2021	Jul. 31, 2021	Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equipment note payable		$ 0		$ 175,398
CNC Machining [Member] \| Financing Agreement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Initial payment	$ 85,661
Monthly payments	$ 6,788
Maturity Terms	January 2023
Installation cost	$ 24,281
Financing Agreement [Member] \| CNC Machining [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equipment value			$ 426,000
Purchase Agreement [Member] \| CNC Machining [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Selling price of equipment		$ 275,000