Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001174947-17-000143-index-headers.html | 2017-02-09 15:53:48 | |
| 0001174947-17-000143-index.html | 2017-02-09 15:53:48 | |
| 0001174947-17-000143.txt | 2017-02-09 15:53:48 | |
 0001174947-17-000143-xbrl.zip | 52361 | 2017-02-09 15:53:48 |
| esp-20161231.xml | 222624 | 2017-02-09 15:53:48 |
| esp-20161231.xsd | 17259 | 2017-02-09 15:53:48 |
| esp-20161231_cal.xml | 45547 | 2017-02-09 15:53:48 |
| esp-20161231_def.xml | 39317 | 2017-02-09 15:53:48 |
| esp-20161231_lab.xml | 208211 | 2017-02-09 15:53:48 |
| esp-20161231_pre.xml | 141175 | 2017-02-09 15:53:48 |
| ex31-1.htm | 8819 | 2017-02-09 15:53:48 |
| ex31-2.htm | 8732 | 2017-02-09 15:53:48 |
| ex32-1.htm | 3573 | 2017-02-09 15:53:48 |
| ex32-2.htm | 3697 | 2017-02-09 15:53:48 |
| FilingSummary.xml | 15627 | 2017-02-09 15:53:48 |
| Financial_Report.xlsx | 34048 | 2017-02-09 15:53:48 |
| form10q-17064_esp.htm | 223941 | 2017-02-09 15:53:48 |
 image_001.jpg | 5713 | 2017-02-09 15:53:48 |
| R1.htm | 20245 | 2017-02-09 15:53:48 |
| R10.htm | 6680 | 2017-02-09 15:53:48 |
| R11.htm | 15101 | 2017-02-09 15:53:48 |
| R12.htm | 11970 | 2017-02-09 15:53:48 |
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| R14.htm | 31245 | 2017-02-09 15:53:48 |
| R15.htm | 10124 | 2017-02-09 15:53:48 |
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| R17.htm | 10475 | 2017-02-09 15:53:48 |
| R18.htm | 5696 | 2017-02-09 15:53:48 |
| R19.htm | 38352 | 2017-02-09 15:53:48 |
| R2.htm | 87459 | 2017-02-09 15:53:48 |
| R20.htm | 14337 | 2017-02-09 15:53:48 |
| R21.htm | 51372 | 2017-02-09 15:53:48 |
| R22.htm | 19869 | 2017-02-09 15:53:48 |
| R23.htm | 4211 | 2017-02-09 15:53:48 |
| R24.htm | 8652 | 2017-02-09 15:53:48 |
| R25.htm | 14314 | 2017-02-09 15:53:48 |
| R26.htm | 13313 | 2017-02-09 15:53:48 |
| R3.htm | 19497 | 2017-02-09 15:53:48 |
| R4.htm | 54034 | 2017-02-09 15:53:48 |
| R5.htm | 83057 | 2017-02-09 15:53:48 |
| R6.htm | 6058 | 2017-02-09 15:53:48 |
| R7.htm | 28090 | 2017-02-09 15:53:48 |
| R8.htm | 6541 | 2017-02-09 15:53:48 |
| R9.htm | 34266 | 2017-02-09 15:53:48 |
| report.css | 2767 | 2017-02-09 15:53:48 |
| Show.js | 1410 | 2017-02-09 15:53:48 |