Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000726514-14-000058-index-headers.html | 2014-06-12 15:13:44 | |
| 0000726514-14-000058-index.html | 2014-06-12 15:13:44 | |
| 0000726514-14-000058.txt | 2014-06-12 15:13:44 | |
 0000726514-14-000058-xbrl.zip | 298636 | 2014-06-12 15:13:44 |
| esi-20140329.xml | 2322789 | 2014-06-12 15:13:44 |
| esi-20140329.xsd | 70101 | 2014-06-12 15:13:44 |
| esi-20140329_cal.xml | 141187 | 2014-06-12 15:13:44 |
| esi-20140329_def.xml | 412205 | 2014-06-12 15:13:44 |
| esi-20140329_lab.xml | 989509 | 2014-06-12 15:13:44 |
| esi-20140329_pre.xml | 608439 | 2014-06-12 15:13:44 |
| esi10-k3292014.htm | 1899530 | 2014-06-12 15:13:44 |
 esi10-k3302013_chart.jpg | 89659 | 2014-06-12 15:13:44 |
| ex-1032formofperformancexb.htm | 57779 | 2014-06-12 15:13:44 |
| ex-21subsidiariesofthecomp.htm | 23729 | 2014-06-12 15:13:44 |
| ex-23consentofindependentr.htm | 5512 | 2014-06-12 15:13:44 |
| ex-241powerofattorneyforfr.htm | 4177 | 2014-06-12 15:13:44 |
| ex-242powerofattorneyforri.htm | 4561 | 2014-06-12 15:13:44 |
| ex-243powerofattorneyfored.htm | 4699 | 2014-06-12 15:13:44 |
| ex-244powerofattorneyforba.htm | 4386 | 2014-06-12 15:13:44 |
| ex-245powerofattorneyforda.htm | 4389 | 2014-06-12 15:13:44 |
| ex-246powerofattorneyforjo.htm | 4387 | 2014-06-12 15:13:44 |
| ex-247powerofattorneyforro.htm | 4390 | 2014-06-12 15:13:44 |
| ex-311certificationofthech.htm | 12486 | 2014-06-12 15:13:44 |
| ex-312certificationofthech.htm | 12630 | 2014-06-12 15:13:44 |
| ex-321certificationofchief.htm | 6099 | 2014-06-12 15:13:44 |
| ex-322certificationofchief.htm | 6530 | 2014-06-12 15:13:44 |
| FilingSummary.xml | 48992 | 2014-06-12 15:13:44 |
| Financial_Report.xls | 1963154 | 2014-06-12 15:13:44 |
| Financial_Report.xlsx | 270689 | 2014-06-12 15:13:44 |
| R1.htm | 37263 | 2014-06-12 15:13:44 |
| R10.htm | 6777 | 2014-06-12 15:13:44 |
| R11.htm | 48384 | 2014-06-12 15:13:44 |
| R12.htm | 13440 | 2014-06-12 15:13:44 |
| R13.htm | 135650 | 2014-06-12 15:13:44 |
| R14.htm | 171535 | 2014-06-12 15:13:44 |
| R15.htm | 14809 | 2014-06-12 15:13:44 |
| R16.htm | 16507 | 2014-06-12 15:13:44 |
| R17.htm | 14319 | 2014-06-12 15:13:44 |
| R18.htm | 27544 | 2014-06-12 15:13:44 |
| R19.htm | 6535 | 2014-06-12 15:13:44 |
| R2.htm | 110656 | 2014-06-12 15:13:44 |
| R20.htm | 54042 | 2014-06-12 15:13:44 |
| R21.htm | 17020 | 2014-06-12 15:13:44 |
| R22.htm | 151538 | 2014-06-12 15:13:44 |
| R23.htm | 26894 | 2014-06-12 15:13:44 |
| R24.htm | 20059 | 2014-06-12 15:13:44 |
| R25.htm | 20127 | 2014-06-12 15:13:44 |
| R26.htm | 31881 | 2014-06-12 15:13:44 |
| R27.htm | 16204 | 2014-06-12 15:13:44 |
| R28.htm | 30383 | 2014-06-12 15:13:44 |
| R29.htm | 40409 | 2014-06-12 15:13:44 |
| R3.htm | 27001 | 2014-06-12 15:13:44 |
| R30.htm | 9230 | 2014-06-12 15:13:44 |
| R31.htm | 7836 | 2014-06-12 15:13:44 |
| R32.htm | 45377 | 2014-06-12 15:13:44 |
| R33.htm | 18288 | 2014-06-12 15:13:44 |
| R34.htm | 86447 | 2014-06-12 15:13:44 |
| R35.htm | 5641 | 2014-06-12 15:13:44 |
| R36.htm | 120608 | 2014-06-12 15:13:44 |
| R37.htm | 5225 | 2014-06-12 15:13:44 |
| R38.htm | 135639 | 2014-06-12 15:13:44 |
| R39.htm | 169430 | 2014-06-12 15:13:44 |
| R4.htm | 83882 | 2014-06-12 15:13:44 |
| R40.htm | 14573 | 2014-06-12 15:13:44 |
| R41.htm | 14277 | 2014-06-12 15:13:44 |
| R42.htm | 24470 | 2014-06-12 15:13:44 |
| R43.htm | 57070 | 2014-06-12 15:13:44 |
| R44.htm | 14791 | 2014-06-12 15:13:44 |
| R45.htm | 98109 | 2014-06-12 15:13:44 |
| R46.htm | 25875 | 2014-06-12 15:13:44 |
| R47.htm | 19628 | 2014-06-12 15:13:44 |
| R48.htm | 19688 | 2014-06-12 15:13:44 |
| R49.htm | 22375 | 2014-06-12 15:13:44 |
| R5.htm | 26695 | 2014-06-12 15:13:44 |
| R50.htm | 13055 | 2014-06-12 15:13:44 |
| R51.htm | 27838 | 2014-06-12 15:13:44 |
| R52.htm | 26575 | 2014-06-12 15:13:44 |
| R53.htm | 47704 | 2014-06-12 15:13:44 |
| R54.htm | 14373 | 2014-06-12 15:13:44 |
| R55.htm | 75683 | 2014-06-12 15:13:44 |
| R56.htm | 49463 | 2014-06-12 15:13:44 |
| R57.htm | 10772 | 2014-06-12 15:13:44 |
| R58.htm | 22346 | 2014-06-12 15:13:44 |
| R59.htm | 23642 | 2014-06-12 15:13:44 |
| R6.htm | 10786 | 2014-06-12 15:13:44 |
| R60.htm | 55313 | 2014-06-12 15:13:44 |
| R61.htm | 39074 | 2014-06-12 15:13:44 |
| R62.htm | 34419 | 2014-06-12 15:13:44 |
| R63.htm | 59630 | 2014-06-12 15:13:44 |
| R64.htm | 31618 | 2014-06-12 15:13:44 |
| R65.htm | 9376 | 2014-06-12 15:13:44 |
| R66.htm | 56330 | 2014-06-12 15:13:44 |
| R67.htm | 16469 | 2014-06-12 15:13:44 |
| R68.htm | 14242 | 2014-06-12 15:13:44 |
| R69.htm | 30088 | 2014-06-12 15:13:44 |
| R7.htm | 72409 | 2014-06-12 15:13:44 |
| R70.htm | 12514 | 2014-06-12 15:13:44 |
| R71.htm | 26301 | 2014-06-12 15:13:44 |
| R72.htm | 10264 | 2014-06-12 15:13:44 |
| R73.htm | 21112 | 2014-06-12 15:13:44 |
| R74.htm | 33044 | 2014-06-12 15:13:44 |
| R75.htm | 82709 | 2014-06-12 15:13:44 |
| R76.htm | 27975 | 2014-06-12 15:13:44 |
| R77.htm | 48408 | 2014-06-12 15:13:44 |
| R78.htm | 38527 | 2014-06-12 15:13:44 |
| R79.htm | 14251 | 2014-06-12 15:13:44 |
| R8.htm | 4943 | 2014-06-12 15:13:44 |
| R80.htm | 42457 | 2014-06-12 15:13:44 |
| R81.htm | 12008 | 2014-06-12 15:13:44 |
| R82.htm | 12809 | 2014-06-12 15:13:44 |
| R83.htm | 13547 | 2014-06-12 15:13:44 |
| R84.htm | 27380 | 2014-06-12 15:13:44 |
| R85.htm | 29671 | 2014-06-12 15:13:44 |
| R86.htm | 6939 | 2014-06-12 15:13:44 |
| R87.htm | 5257 | 2014-06-12 15:13:44 |
| R88.htm | 31053 | 2014-06-12 15:13:44 |
| R89.htm | 16792 | 2014-06-12 15:13:44 |
| R9.htm | 129828 | 2014-06-12 15:13:44 |
| R90.htm | 14408 | 2014-06-12 15:13:44 |
| R91.htm | 14305 | 2014-06-12 15:13:44 |
| R92.htm | 14622 | 2014-06-12 15:13:44 |
| R93.htm | 8700 | 2014-06-12 15:13:44 |
| R94.htm | 13613 | 2014-06-12 15:13:44 |
| R95.htm | 12053 | 2014-06-12 15:13:44 |
| R96.htm | 64266 | 2014-06-12 15:13:44 |
| report.css | 2740 | 2014-06-12 15:13:44 |
| Show.js | 1410 | 2014-06-12 15:13:44 |