Note 10 - Leases - Amortization of Right of Use Asset (Details) - USD ($)	Dec. 31, 2022	Mar. 31, 2022
2023	$ 75,920
2024	62,320
2025	$ 61,827
Banner Midstream Corp. [Member]
2023		$ 189,561
2024		156,762
2025		18,897
Total		$ 365,220

Amount of amortization expense for lessee's right to use underlying asset under operating lease expected to be recognized in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	evtn_RightofuseAssetAmortizationExpenseNextRolling12Months
Namespace Prefix:	evtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant