Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001078271-13-000020-index-headers.html | 2013-05-01 16:12:16 | |
| 0001078271-13-000020-index.html | 2013-05-01 16:12:16 | |
| 0001078271-13-000020.txt | 2013-05-01 16:12:16 | |
 0001078271-13-000020-xbrl.zip | 186225 | 2013-05-01 16:12:16 |
| extr-0331201310q.htm | 1393349 | 2013-05-01 16:12:16 |
| extr-20130331.xml | 1578449 | 2013-05-01 16:12:16 |
| extr-20130331.xsd | 44235 | 2013-05-01 16:12:16 |
| extr-20130331_cal.xml | 83893 | 2013-05-01 16:12:16 |
| extr-20130331_def.xml | 163294 | 2013-05-01 16:12:16 |
| extr-20130331_lab.xml | 624668 | 2013-05-01 16:12:16 |
| extr-20130331_pre.xml | 341442 | 2013-05-01 16:12:16 |
| FilingSummary.xml | 27931 | 2013-05-01 16:12:16 |
| Financial_Report.xls | 1300593 | 2013-05-01 16:12:16 |
| R1.htm | 26699 | 2013-05-01 16:12:16 |
| R10.htm | 233026 | 2013-05-01 16:12:16 |
| R11.htm | 74024 | 2013-05-01 16:12:16 |
| R12.htm | 116023 | 2013-05-01 16:12:16 |
| R13.htm | 9195 | 2013-05-01 16:12:16 |
| R14.htm | 25898 | 2013-05-01 16:12:16 |
| R15.htm | 16574 | 2013-05-01 16:12:16 |
| R16.htm | 42437 | 2013-05-01 16:12:16 |
| R17.htm | 33069 | 2013-05-01 16:12:16 |
| R18.htm | 16530 | 2013-05-01 16:12:16 |
| R19.htm | 39943 | 2013-05-01 16:12:16 |
| R2.htm | 132915 | 2013-05-01 16:12:16 |
| R20.htm | 6151 | 2013-05-01 16:12:16 |
| R21.htm | 157066 | 2013-05-01 16:12:16 |
| R22.htm | 240876 | 2013-05-01 16:12:16 |
| R23.htm | 59045 | 2013-05-01 16:12:16 |
| R24.htm | 116323 | 2013-05-01 16:12:16 |
| R25.htm | 37422 | 2013-05-01 16:12:16 |
| R26.htm | 30789 | 2013-05-01 16:12:16 |
| R27.htm | 33734 | 2013-05-01 16:12:16 |
| R28.htm | 28636 | 2013-05-01 16:12:16 |
| R29.htm | 32805 | 2013-05-01 16:12:16 |
| R3.htm | 32594 | 2013-05-01 16:12:16 |
| R30.htm | 27649 | 2013-05-01 16:12:16 |
| R31.htm | 39583 | 2013-05-01 16:12:16 |
| R32.htm | 26370 | 2013-05-01 16:12:16 |
| R33.htm | 20799 | 2013-05-01 16:12:16 |
| R34.htm | 23012 | 2013-05-01 16:12:16 |
| R35.htm | 11790 | 2013-05-01 16:12:16 |
| R36.htm | 13783 | 2013-05-01 16:12:16 |
| R37.htm | 12411 | 2013-05-01 16:12:16 |
| R38.htm | 35372 | 2013-05-01 16:12:16 |
| R39.htm | 15484 | 2013-05-01 16:12:16 |
| R4.htm | 104770 | 2013-05-01 16:12:16 |
| R40.htm | 8399 | 2013-05-01 16:12:16 |
| R41.htm | 69296 | 2013-05-01 16:12:16 |
| R42.htm | 40677 | 2013-05-01 16:12:16 |
| R43.htm | 21212 | 2013-05-01 16:12:16 |
| R44.htm | 24292 | 2013-05-01 16:12:16 |
| R45.htm | 31723 | 2013-05-01 16:12:16 |
| R46.htm | 25725 | 2013-05-01 16:12:16 |
| R47.htm | 41986 | 2013-05-01 16:12:16 |
| R48.htm | 9093 | 2013-05-01 16:12:16 |
| R49.htm | 37690 | 2013-05-01 16:12:16 |
| R5.htm | 31962 | 2013-05-01 16:12:16 |
| R50.htm | 12443 | 2013-05-01 16:12:16 |
| R51.htm | 7781 | 2013-05-01 16:12:16 |
| R52.htm | 12673 | 2013-05-01 16:12:16 |
| R6.htm | 126287 | 2013-05-01 16:12:16 |
| R7.htm | 13927 | 2013-05-01 16:12:16 |
| R8.htm | 12090 | 2013-05-01 16:12:16 |
| R9.htm | 9660 | 2013-05-01 16:12:16 |
| report.css | 2721 | 2013-05-01 16:12:16 |
| Show.js | 6423 | 2013-05-01 16:12:16 |