Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-12-010939-index-headers.html | 2012-02-24 21:18:07 | |
| 0001140361-12-010939-index.html | 2012-02-24 21:18:07 | |
| 0001140361-12-010939.txt | 2012-02-24 21:18:07 | |
 0001140361-12-010939-xbrl.zip | 463971 | 2012-02-24 21:18:07 |
| ess-20111231.xml | 5346234 | 2012-02-24 21:18:07 |
| ess-20111231.xsd | 165269 | 2012-02-24 21:18:07 |
| ess-20111231_cal.xml | 130730 | 2012-02-24 21:18:07 |
| ess-20111231_def.xml | 492737 | 2012-02-24 21:18:07 |
| ess-20111231_lab.xml | 1713314 | 2012-02-24 21:18:07 |
| ess-20111231_pre.xml | 822366 | 2012-02-24 21:18:07 |
| ex12_1.htm | 85391 | 2012-02-24 21:18:07 |
| ex21_1.htm | 103869 | 2012-02-24 21:18:07 |
| ex23_1.htm | 4209 | 2012-02-24 21:18:07 |
| ex31_1.htm | 16352 | 2012-02-24 21:18:07 |
| ex31_2.htm | 16212 | 2012-02-24 21:18:07 |
| ex32_1.htm | 6541 | 2012-02-24 21:18:07 |
| ex32_2.htm | 5257 | 2012-02-24 21:18:07 |
| FilingSummary.xml | 34023 | 2012-02-24 21:18:07 |
| Financial_Report.xls | 4099607 | 2012-02-24 21:18:07 |
| form10k.htm | 4299261 | 2012-02-24 21:18:07 |
 graph.jpg | 68177 | 2012-02-24 21:18:07 |
 logo.jpg | 5984 | 2012-02-24 21:18:07 |
| R1.htm | 35376 | 2012-02-24 21:18:07 |
| R10.htm | 157200 | 2012-02-24 21:18:07 |
| R11.htm | 27755 | 2012-02-24 21:18:07 |
| R12.htm | 13064 | 2012-02-24 21:18:07 |
| R13.htm | 42201 | 2012-02-24 21:18:07 |
| R14.htm | 24360 | 2012-02-24 21:18:07 |
| R15.htm | 9579 | 2012-02-24 21:18:07 |
| R16.htm | 18783 | 2012-02-24 21:18:07 |
| R17.htm | 17932 | 2012-02-24 21:18:07 |
| R18.htm | 25133 | 2012-02-24 21:18:07 |
| R19.htm | 93029 | 2012-02-24 21:18:07 |
| R2.htm | 148533 | 2012-02-24 21:18:07 |
| R20.htm | 182734 | 2012-02-24 21:18:07 |
| R21.htm | 94282 | 2012-02-24 21:18:07 |
| R22.htm | 9449 | 2012-02-24 21:18:07 |
| R23.htm | 16929 | 2012-02-24 21:18:07 |
| R24.htm | 6469 | 2012-02-24 21:18:07 |
| R25.htm | 115374 | 2012-02-24 21:18:07 |
| R26.htm | 921292 | 2012-02-24 21:18:07 |
| R27.htm | 202160 | 2012-02-24 21:18:07 |
| R28.htm | 102715 | 2012-02-24 21:18:07 |
| R29.htm | 133772 | 2012-02-24 21:18:07 |
| R3.htm | 31255 | 2012-02-24 21:18:07 |
| R30.htm | 24099 | 2012-02-24 21:18:07 |
| R31.htm | 39504 | 2012-02-24 21:18:07 |
| R32.htm | 27221 | 2012-02-24 21:18:07 |
| R33.htm | 14707 | 2012-02-24 21:18:07 |
| R34.htm | 10674 | 2012-02-24 21:18:07 |
| R35.htm | 90807 | 2012-02-24 21:18:07 |
| R36.htm | 123080 | 2012-02-24 21:18:07 |
| R37.htm | 90658 | 2012-02-24 21:18:07 |
| R38.htm | 112769 | 2012-02-24 21:18:07 |
| R39.htm | 22717 | 2012-02-24 21:18:07 |
| R4.htm | 140975 | 2012-02-24 21:18:07 |
| R40.htm | 148561 | 2012-02-24 21:18:07 |
| R41.htm | 535464 | 2012-02-24 21:18:07 |
| R42.htm | 51294 | 2012-02-24 21:18:07 |
| R43.htm | 42875 | 2012-02-24 21:18:07 |
| R44.htm | 45773 | 2012-02-24 21:18:07 |
| R45.htm | 92478 | 2012-02-24 21:18:07 |
| R46.htm | 75120 | 2012-02-24 21:18:07 |
| R47.htm | 68867 | 2012-02-24 21:18:07 |
| R48.htm | 30890 | 2012-02-24 21:18:07 |
| R49.htm | 56243 | 2012-02-24 21:18:07 |
| R5.htm | 121177 | 2012-02-24 21:18:07 |
| R50.htm | 105333 | 2012-02-24 21:18:07 |
| R51.htm | 54270 | 2012-02-24 21:18:07 |
| R52.htm | 21119 | 2012-02-24 21:18:07 |
| R53.htm | 41558 | 2012-02-24 21:18:07 |
| R54.htm | 49265 | 2012-02-24 21:18:07 |
| R55.htm | 70644 | 2012-02-24 21:18:07 |
| R56.htm | 58145 | 2012-02-24 21:18:07 |
| R57.htm | 106006 | 2012-02-24 21:18:07 |
| R58.htm | 11452 | 2012-02-24 21:18:07 |
| R59.htm | 31129 | 2012-02-24 21:18:07 |
| R6.htm | 231676 | 2012-02-24 21:18:07 |
| R60.htm | 20013 | 2012-02-24 21:18:07 |
| R61.htm | 48074 | 2012-02-24 21:18:07 |
| R62.htm | 1449380 | 2012-02-24 21:18:07 |
| R7.htm | 6458 | 2012-02-24 21:18:07 |
| R8.htm | 13377 | 2012-02-24 21:18:07 |
| R9.htm | 143557 | 2012-02-24 21:18:07 |
| report.css | 2721 | 2012-02-24 21:18:07 |
| Show.js | 6423 | 2012-02-24 21:18:07 |