Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001493152-18-011266-index-headers.html | 2018-08-09 16:41:36 | |
| 0001493152-18-011266-index.html | 2018-08-09 16:41:36 | |
| 0001493152-18-011266.txt | 2018-08-09 16:41:36 | |
 0001493152-18-011266-xbrl.zip | 43888 | 2018-08-09 16:41:36 |
| eng-20180630.xml | 259283 | 2018-08-09 16:41:36 |
| eng-20180630.xsd | 14965 | 2018-08-09 16:41:36 |
| eng-20180630_cal.xml | 36045 | 2018-08-09 16:41:36 |
| eng-20180630_def.xml | 17611 | 2018-08-09 16:41:36 |
| eng-20180630_lab.xml | 104092 | 2018-08-09 16:41:36 |
| eng-20180630_pre.xml | 76396 | 2018-08-09 16:41:36 |
| ex31-1.htm | 11246 | 2018-08-09 16:41:36 |
| ex31-2.htm | 11219 | 2018-08-09 16:41:36 |
| ex32-0.htm | 4787 | 2018-08-09 16:41:36 |
| FilingSummary.xml | 14108 | 2018-08-09 16:41:36 |
| Financial_Report.xlsx | 29607 | 2018-08-09 16:41:36 |
| form10-q.htm | 409243 | 2018-08-09 16:41:36 |
| R1.htm | 21956 | 2018-08-09 16:41:36 |
| R10.htm | 12535 | 2018-08-09 16:41:36 |
| R11.htm | 52547 | 2018-08-09 16:41:36 |
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| R15.htm | 7554 | 2018-08-09 16:41:36 |
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| R18.htm | 4016 | 2018-08-09 16:41:36 |
| R19.htm | 12438 | 2018-08-09 16:41:36 |
| R2.htm | 32943 | 2018-08-09 16:41:36 |
| R20.htm | 19254 | 2018-08-09 16:41:36 |
| R21.htm | 37842 | 2018-08-09 16:41:36 |
| R22.htm | 13156 | 2018-08-09 16:41:36 |
| R3.htm | 55539 | 2018-08-09 16:41:36 |
| R4.htm | 13074 | 2018-08-09 16:41:36 |
| R5.htm | 61593 | 2018-08-09 16:41:36 |
| R6.htm | 7774 | 2018-08-09 16:41:36 |
| R7.htm | 9930 | 2018-08-09 16:41:36 |
| R8.htm | 15864 | 2018-08-09 16:41:36 |
| R9.htm | 8984 | 2018-08-09 16:41:36 |
| report.css | 2767 | 2018-08-09 16:41:36 |
| Show.js | 1410 | 2018-08-09 16:41:36 |