Intangible Assets (Details) - Schedule of amortization expense - USD ($)	3 Months Ended	6 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Amortization Expense Abstract
Amortization expense	$ 64,243	$ 87,204	$ 128,487	$ 174,408

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

No definition available.

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