Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001590714-21-000091-index-headers.html | 2021-10-28 16:17:53 | |
| 0001590714-21-000091-index.html | 2021-10-28 16:17:53 | |
| 0001590714-21-000091.txt | 2021-10-28 16:17:53 | |
 0001590714-21-000091-xbrl.zip | 489708 | 2021-10-28 16:17:53 |
| esi-20210930.htm | 1810621 | 2021-10-28 16:17:53 |
| esi-20210930.xsd | 39905 | 2021-10-28 16:17:53 |
| esi-20210930_cal.xml | 97959 | 2021-10-28 16:17:53 |
| esi-20210930_def.xml | 203039 | 2021-10-28 16:17:53 |
 esi-20210930_g1.jpg | 293021 | 2021-10-28 16:17:53 |
| esi-20210930_htm.xml | 1231111 | 2021-10-28 16:17:53 |
| esi-20210930_lab.xml | 558527 | 2021-10-28 16:17:53 |
| esi-20210930_pre.xml | 380814 | 2021-10-28 16:17:53 |
| esi10-q2021930exx311.htm | 11233 | 2021-10-28 16:17:53 |
| esi10-q2021930exx312.htm | 11447 | 2021-10-28 16:17:53 |
| esi10-q2021930exx321.htm | 10691 | 2021-10-28 16:17:53 |
| FilingSummary.xml | 36318 | 2021-10-28 16:17:53 |
| Financial_Report.xlsx | 79115 | 2021-10-28 16:17:53 |
| MetaLinks.json | 643660 | 2021-10-28 16:17:53 |
| R1.htm | 53768 | 2021-10-28 16:17:53 |
| R10.htm | 8239 | 2021-10-28 16:17:53 |
| R11.htm | 38012 | 2021-10-28 16:17:53 |
| R12.htm | 11064 | 2021-10-28 16:17:53 |
| R13.htm | 16810 | 2021-10-28 16:17:53 |
| R14.htm | 38248 | 2021-10-28 16:17:53 |
| R15.htm | 30077 | 2021-10-28 16:17:53 |
| R16.htm | 44507 | 2021-10-28 16:17:53 |
| R17.htm | 43886 | 2021-10-28 16:17:53 |
| R18.htm | 10523 | 2021-10-28 16:17:53 |
| R19.htm | 9618 | 2021-10-28 16:17:53 |
| R2.htm | 128054 | 2021-10-28 16:17:53 |
| R20.htm | 6130 | 2021-10-28 16:17:53 |
| R21.htm | 82877 | 2021-10-28 16:17:53 |
| R22.htm | 10844 | 2021-10-28 16:17:53 |
| R23.htm | 8326 | 2021-10-28 16:17:53 |
| R24.htm | 36175 | 2021-10-28 16:17:53 |
| R25.htm | 12095 | 2021-10-28 16:17:53 |
| R26.htm | 14874 | 2021-10-28 16:17:53 |
| R27.htm | 39037 | 2021-10-28 16:17:53 |
| R28.htm | 18258 | 2021-10-28 16:17:53 |
| R29.htm | 33819 | 2021-10-28 16:17:53 |
| R3.htm | 54338 | 2021-10-28 16:17:53 |
| R30.htm | 45252 | 2021-10-28 16:17:53 |
| R31.htm | 78410 | 2021-10-28 16:17:53 |
| R32.htm | 4400 | 2021-10-28 16:17:53 |
| R33.htm | 19644 | 2021-10-28 16:17:53 |
| R34.htm | 43436 | 2021-10-28 16:17:53 |
| R35.htm | 22487 | 2021-10-28 16:17:53 |
| R36.htm | 12131 | 2021-10-28 16:17:53 |
| R37.htm | 19532 | 2021-10-28 16:17:53 |
| R38.htm | 10023 | 2021-10-28 16:17:53 |
| R39.htm | 15050 | 2021-10-28 16:17:53 |
| R4.htm | 17185 | 2021-10-28 16:17:53 |
| R40.htm | 12789 | 2021-10-28 16:17:53 |
| R41.htm | 20153 | 2021-10-28 16:17:53 |
| R42.htm | 33599 | 2021-10-28 16:17:53 |
| R43.htm | 26040 | 2021-10-28 16:17:53 |
| R44.htm | 11909 | 2021-10-28 16:17:53 |
| R45.htm | 7048 | 2021-10-28 16:17:53 |
| R46.htm | 15449 | 2021-10-28 16:17:53 |
| R47.htm | 33221 | 2021-10-28 16:17:53 |
| R48.htm | 36994 | 2021-10-28 16:17:53 |
| R49.htm | 8374 | 2021-10-28 16:17:53 |
| R5.htm | 128790 | 2021-10-28 16:17:53 |
| R50.htm | 45326 | 2021-10-28 16:17:53 |
| R51.htm | 7325 | 2021-10-28 16:17:53 |
| R52.htm | 4977 | 2021-10-28 16:17:53 |
| R53.htm | 10491 | 2021-10-28 16:17:53 |
| R54.htm | 10893 | 2021-10-28 16:17:53 |
| R55.htm | 4370 | 2021-10-28 16:17:53 |
| R56.htm | 29343 | 2021-10-28 16:17:53 |
| R57.htm | 48117 | 2021-10-28 16:17:53 |
| R58.htm | 5292 | 2021-10-28 16:17:53 |
| R59.htm | 14963 | 2021-10-28 16:17:53 |
| R6.htm | 12793 | 2021-10-28 16:17:53 |
| R7.htm | 99841 | 2021-10-28 16:17:53 |
| R8.htm | 90572 | 2021-10-28 16:17:53 |
| R9.htm | 4552 | 2021-10-28 16:17:53 |
| report.css | 2767 | 2021-10-28 16:17:53 |
| Show.js | 1085 | 2021-10-28 16:17:53 |