Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001099910-22-000094-index-headers.html | 2022-05-16 16:20:30 | |
| 0001099910-22-000094-index.html | 2022-05-16 16:20:30 | |
| 0001099910-22-000094.txt | 2022-05-16 16:20:30 | |
 0001099910-22-000094-xbrl.zip | 91350 | 2022-05-16 16:20:30 |
| evtn-20220331.xsd | 21009 | 2022-05-16 16:20:30 |
| evtn-20220331_cal.xml | 34987 | 2022-05-16 16:20:30 |
| evtn-20220331_def.xml | 72263 | 2022-05-16 16:20:30 |
| evtn-20220331_lab.xml | 202759 | 2022-05-16 16:20:30 |
| evtn-20220331_pre.xml | 162085 | 2022-05-16 16:20:30 |
| evtn_10q.htm | 454441 | 2022-05-16 16:20:30 |
| evtn_10q_htm.xml | 287967 | 2022-05-16 16:20:30 |
| ex31-1.htm | 9143 | 2022-05-16 16:20:30 |
| ex31-2.htm | 9615 | 2022-05-16 16:20:30 |
| ex32-1.htm | 4376 | 2022-05-16 16:20:30 |
| FilingSummary.xml | 20673 | 2022-05-16 16:20:30 |
| Financial_Report.xlsx | 48532 | 2022-05-16 16:20:30 |
| MetaLinks.json | 355007 | 2022-05-16 16:20:30 |
| R1.htm | 47383 | 2022-05-16 16:20:30 |
| R10.htm | 13058 | 2022-05-16 16:20:30 |
| R11.htm | 15461 | 2022-05-16 16:20:30 |
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| R15.htm | 7936 | 2022-05-16 16:20:30 |
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| R19.htm | 13147 | 2022-05-16 16:20:30 |
| R2.htm | 105700 | 2022-05-16 16:20:30 |
| R20.htm | 25509 | 2022-05-16 16:20:30 |
| R21.htm | 8831 | 2022-05-16 16:20:30 |
| R22.htm | 7594 | 2022-05-16 16:20:30 |
| R23.htm | 10300 | 2022-05-16 16:20:30 |
| R24.htm | 22883 | 2022-05-16 16:20:30 |
| R25.htm | 43113 | 2022-05-16 16:20:30 |
| R26.htm | 14651 | 2022-05-16 16:20:30 |
| R27.htm | 4747 | 2022-05-16 16:20:30 |
| R28.htm | 28472 | 2022-05-16 16:20:30 |
| R29.htm | 17771 | 2022-05-16 16:20:30 |
| R3.htm | 10798 | 2022-05-16 16:20:30 |
| R30.htm | 4193 | 2022-05-16 16:20:30 |
| R31.htm | 9026 | 2022-05-16 16:20:30 |
| R32.htm | 39792 | 2022-05-16 16:20:30 |
| R33.htm | 13177 | 2022-05-16 16:20:30 |
| R34.htm | 13982 | 2022-05-16 16:20:30 |
| R35.htm | 25977 | 2022-05-16 16:20:30 |
| R4.htm | 69737 | 2022-05-16 16:20:30 |
| R5.htm | 22656 | 2022-05-16 16:20:30 |
| R6.htm | 57982 | 2022-05-16 16:20:30 |
| R7.htm | 7476 | 2022-05-16 16:20:30 |
| R8.htm | 9470 | 2022-05-16 16:20:30 |
| R9.htm | 38795 | 2022-05-16 16:20:30 |
| report.css | 2767 | 2022-05-16 16:20:30 |
| Show.js | 1085 | 2022-05-16 16:20:30 |