Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000920522-19-000025-index-headers.html | 2019-04-26 16:22:34 | |
| 0000920522-19-000025-index.html | 2019-04-26 16:22:34 | |
| 0000920522-19-000025.txt | 2019-04-26 16:22:34 | |
 0000920522-19-000025-xbrl.zip | 272591 | 2019-04-26 16:22:34 |
| ess-20190331.xml | 1699250 | 2019-04-26 16:22:34 |
| ess-20190331.xsd | 64354 | 2019-04-26 16:22:34 |
| ess-20190331_cal.xml | 128684 | 2019-04-26 16:22:34 |
| ess-20190331_def.xml | 424978 | 2019-04-26 16:22:34 |
| ess-20190331_lab.xml | 846118 | 2019-04-26 16:22:34 |
| ess-20190331_pre.xml | 513603 | 2019-04-26 16:22:34 |
| ess-33119x10q.htm | 1686596 | 2019-04-26 16:22:34 |
| ess-33119xex311.htm | 13003 | 2019-04-26 16:22:34 |
| ess-33119xex312.htm | 13032 | 2019-04-26 16:22:34 |
| ess-33119xex313.htm | 13133 | 2019-04-26 16:22:34 |
| ess-33119xex314.htm | 13148 | 2019-04-26 16:22:34 |
| ess-33119xex321.htm | 6399 | 2019-04-26 16:22:34 |
| ess-33119xex322.htm | 6205 | 2019-04-26 16:22:34 |
| ess-33119xex323.htm | 6675 | 2019-04-26 16:22:34 |
| ess-33119xex324.htm | 6705 | 2019-04-26 16:22:34 |
| FilingSummary.xml | 34885 | 2019-04-26 16:22:34 |
| Financial_Report.xlsx | 85089 | 2019-04-26 16:22:34 |
| R1.htm | 29768 | 2019-04-26 16:22:34 |
| R10.htm | 4828 | 2019-04-26 16:22:34 |
| R11.htm | 160584 | 2019-04-26 16:22:34 |
| R12.htm | 15535 | 2019-04-26 16:22:34 |
| R13.htm | 46296 | 2019-04-26 16:22:34 |
| R14.htm | 67351 | 2019-04-26 16:22:34 |
| R15.htm | 18149 | 2019-04-26 16:22:34 |
| R16.htm | 15299 | 2019-04-26 16:22:34 |
| R17.htm | 44757 | 2019-04-26 16:22:34 |
| R18.htm | 70792 | 2019-04-26 16:22:34 |
| R19.htm | 75191 | 2019-04-26 16:22:34 |
| R2.htm | 117651 | 2019-04-26 16:22:34 |
| R20.htm | 11777 | 2019-04-26 16:22:34 |
| R21.htm | 26090 | 2019-04-26 16:22:34 |
| R22.htm | 50528 | 2019-04-26 16:22:34 |
| R23.htm | 6500 | 2019-04-26 16:22:34 |
| R24.htm | 58184 | 2019-04-26 16:22:34 |
| R25.htm | 143595 | 2019-04-26 16:22:34 |
| R26.htm | 41872 | 2019-04-26 16:22:34 |
| R27.htm | 67960 | 2019-04-26 16:22:34 |
| R28.htm | 18293 | 2019-04-26 16:22:34 |
| R29.htm | 44862 | 2019-04-26 16:22:34 |
| R3.htm | 17943 | 2019-04-26 16:22:34 |
| R30.htm | 70063 | 2019-04-26 16:22:34 |
| R31.htm | 72612 | 2019-04-26 16:22:34 |
| R32.htm | 21284 | 2019-04-26 16:22:34 |
| R33.htm | 49772 | 2019-04-26 16:22:34 |
| R34.htm | 60726 | 2019-04-26 16:22:34 |
| R35.htm | 39281 | 2019-04-26 16:22:34 |
| R36.htm | 26986 | 2019-04-26 16:22:34 |
| R37.htm | 29027 | 2019-04-26 16:22:34 |
| R38.htm | 10730 | 2019-04-26 16:22:34 |
| R39.htm | 12728 | 2019-04-26 16:22:34 |
| R4.htm | 90043 | 2019-04-26 16:22:34 |
| R40.htm | 53332 | 2019-04-26 16:22:34 |
| R41.htm | 44093 | 2019-04-26 16:22:34 |
| R42.htm | 11037 | 2019-04-26 16:22:34 |
| R43.htm | 26620 | 2019-04-26 16:22:34 |
| R44.htm | 52125 | 2019-04-26 16:22:34 |
| R45.htm | 19203 | 2019-04-26 16:22:34 |
| R46.htm | 75173 | 2019-04-26 16:22:34 |
| R47.htm | 30238 | 2019-04-26 16:22:34 |
| R48.htm | 32271 | 2019-04-26 16:22:34 |
| R49.htm | 19818 | 2019-04-26 16:22:34 |
| R5.htm | 68148 | 2019-04-26 16:22:34 |
| R50.htm | 86159 | 2019-04-26 16:22:34 |
| R51.htm | 40990 | 2019-04-26 16:22:34 |
| R52.htm | 28974 | 2019-04-26 16:22:34 |
| R53.htm | 43786 | 2019-04-26 16:22:34 |
| R54.htm | 36819 | 2019-04-26 16:22:34 |
| R55.htm | 19847 | 2019-04-26 16:22:34 |
| R56.htm | 6807 | 2019-04-26 16:22:34 |
| R57.htm | 19241 | 2019-04-26 16:22:34 |
| R6.htm | 4478 | 2019-04-26 16:22:34 |
| R7.htm | 89569 | 2019-04-26 16:22:34 |
| R8.htm | 4273 | 2019-04-26 16:22:34 |
| R9.htm | 146729 | 2019-04-26 16:22:34 |
| report.css | 2767 | 2019-04-26 16:22:34 |
| Show.js | 1085 | 2019-04-26 16:22:34 |