Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001099910-22-000161-index-headers.html | 2022-08-15 18:18:38 | |
| 0001099910-22-000161-index.html | 2022-08-15 18:18:38 | |
| 0001099910-22-000161.txt | 2022-08-15 18:18:38 | |
 0001099910-22-000161-xbrl.zip | 94955 | 2022-08-15 18:18:38 |
| evtn-10q.htm | 478591 | 2022-08-15 18:18:38 |
| evtn-10q_htm.xml | 298044 | 2022-08-15 18:18:38 |
| evtn-20220630.xsd | 21574 | 2022-08-15 18:18:38 |
| evtn-20220630_cal.xml | 36570 | 2022-08-15 18:18:38 |
| evtn-20220630_def.xml | 68298 | 2022-08-15 18:18:38 |
| evtn-20220630_lab.xml | 213143 | 2022-08-15 18:18:38 |
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| ex31-1.htm | 7932 | 2022-08-15 18:18:38 |
| ex31-2.htm | 7799 | 2022-08-15 18:18:38 |
| ex32-1.htm | 3870 | 2022-08-15 18:18:38 |
| FilingSummary.xml | 20529 | 2022-08-15 18:18:38 |
| Financial_Report.xlsx | 53314 | 2022-08-15 18:18:38 |
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| R1.htm | 46673 | 2022-08-15 18:18:38 |
| R10.htm | 12951 | 2022-08-15 18:18:38 |
| R11.htm | 12451 | 2022-08-15 18:18:38 |
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| R14.htm | 7335 | 2022-08-15 18:18:38 |
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| R19.htm | 9451 | 2022-08-15 18:18:38 |
| R2.htm | 103520 | 2022-08-15 18:18:38 |
| R20.htm | 27839 | 2022-08-15 18:18:38 |
| R21.htm | 7361 | 2022-08-15 18:18:38 |
| R22.htm | 7560 | 2022-08-15 18:18:38 |
| R23.htm | 10184 | 2022-08-15 18:18:38 |
| R24.htm | 15789 | 2022-08-15 18:18:38 |
| R25.htm | 50311 | 2022-08-15 18:18:38 |
| R26.htm | 14665 | 2022-08-15 18:18:38 |
| R27.htm | 9365 | 2022-08-15 18:18:38 |
| R28.htm | 29344 | 2022-08-15 18:18:38 |
| R29.htm | 18147 | 2022-08-15 18:18:38 |
| R3.htm | 10685 | 2022-08-15 18:18:38 |
| R30.htm | 4278 | 2022-08-15 18:18:38 |
| R31.htm | 8938 | 2022-08-15 18:18:38 |
| R32.htm | 44827 | 2022-08-15 18:18:38 |
| R33.htm | 17463 | 2022-08-15 18:18:38 |
| R34.htm | 20760 | 2022-08-15 18:18:38 |
| R35.htm | 18707 | 2022-08-15 18:18:38 |
| R4.htm | 72233 | 2022-08-15 18:18:38 |
| R5.htm | 26887 | 2022-08-15 18:18:38 |
| R6.htm | 65414 | 2022-08-15 18:18:38 |
| R7.htm | 7365 | 2022-08-15 18:18:38 |
| R8.htm | 9194 | 2022-08-15 18:18:38 |
| R9.htm | 33887 | 2022-08-15 18:18:38 |
| report.css | 2767 | 2022-08-15 18:18:38 |
| Show.js | 1085 | 2022-08-15 18:18:38 |