Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001174947-18-000202-index-headers.html | 2018-02-13 16:14:25 | |
| 0001174947-18-000202-index.html | 2018-02-13 16:14:25 | |
| 0001174947-18-000202.txt | 2018-02-13 16:14:25 | |
 0001174947-18-000202-xbrl.zip | 54752 | 2018-02-13 16:14:25 |
| esp-20171231.xml | 222233 | 2018-02-13 16:14:25 |
| esp-20171231.xsd | 18219 | 2018-02-13 16:14:25 |
| esp-20171231_cal.xml | 45529 | 2018-02-13 16:14:25 |
| esp-20171231_def.xml | 44752 | 2018-02-13 16:14:25 |
| esp-20171231_lab.xml | 217713 | 2018-02-13 16:14:25 |
| esp-20171231_pre.xml | 146392 | 2018-02-13 16:14:25 |
| ex31-1.htm | 9405 | 2018-02-13 16:14:25 |
| ex31-2.htm | 9813 | 2018-02-13 16:14:25 |
| ex32-1.htm | 4283 | 2018-02-13 16:14:25 |
| ex32-2.htm | 4990 | 2018-02-13 16:14:25 |
| FilingSummary.xml | 15572 | 2018-02-13 16:14:25 |
| Financial_Report.xlsx | 34293 | 2018-02-13 16:14:25 |
| form10q-19408_esp.htm | 226858 | 2018-02-13 16:14:25 |
 image_001.jpg | 5713 | 2018-02-13 16:14:25 |
| R1.htm | 20245 | 2018-02-13 16:14:25 |
| R10.htm | 5534 | 2018-02-13 16:14:25 |
| R11.htm | 12702 | 2018-02-13 16:14:25 |
| R12.htm | 11540 | 2018-02-13 16:14:25 |
| R13.htm | 26482 | 2018-02-13 16:14:25 |
| R14.htm | 29916 | 2018-02-13 16:14:25 |
| R15.htm | 9843 | 2018-02-13 16:14:25 |
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| R17.htm | 10439 | 2018-02-13 16:14:25 |
| R18.htm | 5040 | 2018-02-13 16:14:25 |
| R19.htm | 49687 | 2018-02-13 16:14:25 |
| R2.htm | 90395 | 2018-02-13 16:14:25 |
| R20.htm | 14323 | 2018-02-13 16:14:25 |
| R21.htm | 52000 | 2018-02-13 16:14:25 |
| R22.htm | 19888 | 2018-02-13 16:14:25 |
| R23.htm | 4211 | 2018-02-13 16:14:25 |
| R24.htm | 8913 | 2018-02-13 16:14:25 |
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| R26.htm | 13102 | 2018-02-13 16:14:25 |
| R3.htm | 19506 | 2018-02-13 16:14:25 |
| R4.htm | 52483 | 2018-02-13 16:14:25 |
| R5.htm | 76111 | 2018-02-13 16:14:25 |
| R6.htm | 6043 | 2018-02-13 16:14:25 |
| R7.htm | 26797 | 2018-02-13 16:14:25 |
| R8.htm | 5125 | 2018-02-13 16:14:25 |
| R9.htm | 31992 | 2018-02-13 16:14:25 |
| report.css | 2767 | 2018-02-13 16:14:25 |
| Show.js | 1410 | 2018-02-13 16:14:25 |