Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001047469-15-002966-index-headers.html | 2015-03-30 20:46:05 | |
| 0001047469-15-002966-index.html | 2015-03-30 20:46:05 | |
| 0001047469-15-002966.txt | 2015-03-30 20:46:05 | |
 0001047469-15-002966-xbrl.zip | 255169 | 2015-03-30 20:46:05 |
| a2223738z10-k.htm | 1562220 | 2015-03-30 20:46:05 |
| a2223738zex-10_4.htm | 37058 | 2015-03-30 20:46:05 |
| a2223738zex-10_5.htm | 34031 | 2015-03-30 20:46:05 |
| a2223738zex-10_6.htm | 32534 | 2015-03-30 20:46:05 |
| a2223738zex-21_1.htm | 5985 | 2015-03-30 20:46:05 |
| a2223738zex-23_1.htm | 4897 | 2015-03-30 20:46:05 |
| a2223738zex-31_1.htm | 7842 | 2015-03-30 20:46:05 |
| a2223738zex-31_2.htm | 7912 | 2015-03-30 20:46:05 |
| a2223738zex-32_1.htm | 5942 | 2015-03-30 20:46:05 |
| a2223738zex-4_4.htm | 81991 | 2015-03-30 20:46:05 |
| a2223738zex-4_5.htm | 20898 | 2015-03-30 20:46:05 |
| eprs-20141231.xml | 2493953 | 2015-03-30 20:46:05 |
| eprs-20141231.xsd | 85849 | 2015-03-30 20:46:05 |
| eprs-20141231_cal.xml | 89384 | 2015-03-30 20:46:05 |
| eprs-20141231_def.xml | 389566 | 2015-03-30 20:46:05 |
| eprs-20141231_lab.xml | 751929 | 2015-03-30 20:46:05 |
| eprs-20141231_pre.xml | 625553 | 2015-03-30 20:46:05 |
| FilingSummary.xml | 32091 | 2015-03-30 20:46:05 |
| Financial_Report.xls | 2423486 | 2015-03-30 20:46:05 |
| Financial_Report.xlsx | 234636 | 2015-03-30 20:46:05 |
 g221529.jpg | 68612 | 2015-03-30 20:46:05 |
 g546868.jpg | 75570 | 2015-03-30 20:46:05 |
 g605714.jpg | 27722 | 2015-03-30 20:46:05 |
 g798645.jpg | 41506 | 2015-03-30 20:46:05 |
| R1.htm | 38222 | 2015-03-30 20:46:05 |
| R10.htm | 80871 | 2015-03-30 20:46:05 |
| R11.htm | 29170 | 2015-03-30 20:46:05 |
| R12.htm | 35669 | 2015-03-30 20:46:05 |
| R13.htm | 66409 | 2015-03-30 20:46:05 |
| R14.htm | 32418 | 2015-03-30 20:46:05 |
| R15.htm | 44340 | 2015-03-30 20:46:05 |
| R16.htm | 46229 | 2015-03-30 20:46:05 |
| R17.htm | 166476 | 2015-03-30 20:46:05 |
| R18.htm | 50214 | 2015-03-30 20:46:05 |
| R19.htm | 185597 | 2015-03-30 20:46:05 |
| R2.htm | 126300 | 2015-03-30 20:46:05 |
| R20.htm | 166638 | 2015-03-30 20:46:05 |
| R21.htm | 45463 | 2015-03-30 20:46:05 |
| R22.htm | 25331 | 2015-03-30 20:46:05 |
| R23.htm | 7818 | 2015-03-30 20:46:05 |
| R24.htm | 9846 | 2015-03-30 20:46:05 |
| R25.htm | 18519 | 2015-03-30 20:46:05 |
| R26.htm | 8564 | 2015-03-30 20:46:05 |
| R27.htm | 138065 | 2015-03-30 20:46:05 |
| R28.htm | 10567 | 2015-03-30 20:46:05 |
| R29.htm | 68177 | 2015-03-30 20:46:05 |
| R3.htm | 55314 | 2015-03-30 20:46:05 |
| R30.htm | 28618 | 2015-03-30 20:46:05 |
| R31.htm | 34247 | 2015-03-30 20:46:05 |
| R32.htm | 62757 | 2015-03-30 20:46:05 |
| R33.htm | 31416 | 2015-03-30 20:46:05 |
| R34.htm | 20887 | 2015-03-30 20:46:05 |
| R35.htm | 39287 | 2015-03-30 20:46:05 |
| R36.htm | 165734 | 2015-03-30 20:46:05 |
| R37.htm | 31788 | 2015-03-30 20:46:05 |
| R38.htm | 170065 | 2015-03-30 20:46:05 |
| R39.htm | 158203 | 2015-03-30 20:46:05 |
| R4.htm | 58877 | 2015-03-30 20:46:05 |
| R40.htm | 28826 | 2015-03-30 20:46:05 |
| R41.htm | 23206 | 2015-03-30 20:46:05 |
| R42.htm | 29442 | 2015-03-30 20:46:05 |
| R43.htm | 49974 | 2015-03-30 20:46:05 |
| R44.htm | 109859 | 2015-03-30 20:46:05 |
| R45.htm | 168014 | 2015-03-30 20:46:05 |
| R46.htm | 18799 | 2015-03-30 20:46:05 |
| R47.htm | 28310 | 2015-03-30 20:46:05 |
| R48.htm | 12260 | 2015-03-30 20:46:05 |
| R49.htm | 45883 | 2015-03-30 20:46:05 |
| R5.htm | 124362 | 2015-03-30 20:46:05 |
| R50.htm | 24062 | 2015-03-30 20:46:05 |
| R51.htm | 28712 | 2015-03-30 20:46:05 |
| R52.htm | 255988 | 2015-03-30 20:46:05 |
| R53.htm | 24371 | 2015-03-30 20:46:05 |
| R54.htm | 172852 | 2015-03-30 20:46:05 |
| R55.htm | 23831 | 2015-03-30 20:46:05 |
| R56.htm | 145600 | 2015-03-30 20:46:05 |
| R57.htm | 119307 | 2015-03-30 20:46:05 |
| R58.htm | 217994 | 2015-03-30 20:46:05 |
| R59.htm | 85652 | 2015-03-30 20:46:05 |
| R6.htm | 160425 | 2015-03-30 20:46:05 |
| R60.htm | 58332 | 2015-03-30 20:46:05 |
| R61.htm | 34121 | 2015-03-30 20:46:05 |
| R62.htm | 84167 | 2015-03-30 20:46:05 |
| R63.htm | 37659 | 2015-03-30 20:46:05 |
| R64.htm | 40085 | 2015-03-30 20:46:05 |
| R65.htm | 131550 | 2015-03-30 20:46:05 |
| R66.htm | 27202 | 2015-03-30 20:46:05 |
| R67.htm | 5332 | 2015-03-30 20:46:05 |
| R68.htm | 13898 | 2015-03-30 20:46:05 |
| R69.htm | 37180 | 2015-03-30 20:46:05 |
| R7.htm | 12762 | 2015-03-30 20:46:05 |
| R70.htm | 17189 | 2015-03-30 20:46:05 |
| R8.htm | 65330 | 2015-03-30 20:46:05 |
| R9.htm | 27393 | 2015-03-30 20:46:05 |
| report.css | 2740 | 2015-03-30 20:46:05 |
| Show.js | 1410 | 2015-03-30 20:46:05 |