Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001099910-18-000078-index-headers.html | 2018-11-16 17:51:39 | |
| 0001099910-18-000078-index.html | 2018-11-16 17:51:39 | |
| 0001099910-18-000078.txt | 2018-11-16 17:51:39 | |
 0001099910-18-000078-xbrl.zip | 65114 | 2018-11-16 17:51:39 |
| evtn-20180930.xml | 257250 | 2018-11-16 17:51:39 |
| evtn-20180930.xsd | 23276 | 2018-11-16 17:51:39 |
| evtn-20180930_cal.xml | 36241 | 2018-11-16 17:51:39 |
| evtn-20180930_def.xml | 75863 | 2018-11-16 17:51:39 |
| evtn-20180930_lab.xml | 193205 | 2018-11-16 17:51:39 |
| evtn-20180930_pre.xml | 150974 | 2018-11-16 17:51:39 |
| evtn_10q.htm | 393253 | 2018-11-16 17:51:39 |
| ex31-1.htm | 7886 | 2018-11-16 17:51:39 |
| ex31-2.htm | 7879 | 2018-11-16 17:51:39 |
| ex32-1.htm | 3357 | 2018-11-16 17:51:39 |
| FilingSummary.xml | 18079 | 2018-11-16 17:51:39 |
| Financial_Report.xlsx | 39875 | 2018-11-16 17:51:39 |
| R1.htm | 29407 | 2018-11-16 17:51:39 |
| R10.htm | 6961 | 2018-11-16 17:51:39 |
| R11.htm | 13351 | 2018-11-16 17:51:39 |
| R12.htm | 22801 | 2018-11-16 17:51:39 |
| R13.htm | 14313 | 2018-11-16 17:51:39 |
| R14.htm | 6978 | 2018-11-16 17:51:39 |
| R15.htm | 87689 | 2018-11-16 17:51:39 |
| R16.htm | 10663 | 2018-11-16 17:51:39 |
| R17.htm | 11637 | 2018-11-16 17:51:39 |
| R18.htm | 17554 | 2018-11-16 17:51:39 |
| R19.htm | 4630 | 2018-11-16 17:51:39 |
| R2.htm | 58866 | 2018-11-16 17:51:39 |
| R20.htm | 13300 | 2018-11-16 17:51:39 |
| R21.htm | 10750 | 2018-11-16 17:51:39 |
| R22.htm | 29087 | 2018-11-16 17:51:39 |
| R23.htm | 29111 | 2018-11-16 17:51:39 |
| R24.htm | 13823 | 2018-11-16 17:51:39 |
| R25.htm | 10054 | 2018-11-16 17:51:39 |
| R26.htm | 20929 | 2018-11-16 17:51:39 |
| R27.htm | 16469 | 2018-11-16 17:51:39 |
| R28.htm | 14643 | 2018-11-16 17:51:39 |
| R29.htm | 27055 | 2018-11-16 17:51:39 |
| R3.htm | 10737 | 2018-11-16 17:51:39 |
| R30.htm | 10521 | 2018-11-16 17:51:39 |
| R4.htm | 57144 | 2018-11-16 17:51:39 |
| R5.htm | 24230 | 2018-11-16 17:51:39 |
| R6.htm | 68896 | 2018-11-16 17:51:39 |
| R7.htm | 7353 | 2018-11-16 17:51:39 |
| R8.htm | 8955 | 2018-11-16 17:51:39 |
| R9.htm | 42515 | 2018-11-16 17:51:39 |
| report.css | 2767 | 2018-11-16 17:51:39 |
| Show.js | 1085 | 2018-11-16 17:51:39 |