Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001133796-12-000115-index-headers.html | 2012-05-31 15:21:23 | |
| 0001133796-12-000115-index.html | 2012-05-31 15:21:23 | |
| 0001133796-12-000115.txt | 2012-05-31 15:21:23 | |
 0001133796-12-000115-xbrl.zip | 116400 | 2012-05-31 15:21:23 |
| FilingSummary.xml | 27223 | 2012-05-31 15:21:23 |
| Financial_Report.xls | 647353 | 2012-05-31 15:21:23 |
| hei-20120430.xml | 808160 | 2012-05-31 15:21:23 |
| hei-20120430.xsd | 55219 | 2012-05-31 15:21:23 |
| hei-20120430_cal.xml | 53163 | 2012-05-31 15:21:23 |
| hei-20120430_def.xml | 264835 | 2012-05-31 15:21:23 |
| hei-20120430_lab.xml | 424208 | 2012-05-31 15:21:23 |
| hei-20120430_pre.xml | 317188 | 2012-05-31 15:21:23 |
| k311589_10q.htm | 606971 | 2012-05-31 15:21:23 |
| k311589_ex31-1.htm | 9371 | 2012-05-31 15:21:23 |
| k311589_ex31-2.htm | 10295 | 2012-05-31 15:21:23 |
| k311589_ex32-1.htm | 3619 | 2012-05-31 15:21:23 |
| k311589_ex32-2.htm | 3726 | 2012-05-31 15:21:23 |
| R1.htm | 27704 | 2012-05-31 15:21:23 |
| R10.htm | 32217 | 2012-05-31 15:21:23 |
| R11.htm | 56648 | 2012-05-31 15:21:23 |
| R12.htm | 14124 | 2012-05-31 15:21:23 |
| R13.htm | 13333 | 2012-05-31 15:21:23 |
| R14.htm | 57461 | 2012-05-31 15:21:23 |
| R15.htm | 10357 | 2012-05-31 15:21:23 |
| R16.htm | 8005 | 2012-05-31 15:21:23 |
| R17.htm | 24816 | 2012-05-31 15:21:23 |
| R18.htm | 45335 | 2012-05-31 15:21:23 |
| R19.htm | 14772 | 2012-05-31 15:21:23 |
| R2.htm | 147018 | 2012-05-31 15:21:23 |
| R20.htm | 21703 | 2012-05-31 15:21:23 |
| R21.htm | 23030 | 2012-05-31 15:21:23 |
| R22.htm | 38213 | 2012-05-31 15:21:23 |
| R23.htm | 60012 | 2012-05-31 15:21:23 |
| R24.htm | 13590 | 2012-05-31 15:21:23 |
| R25.htm | 10377 | 2012-05-31 15:21:23 |
| R26.htm | 49847 | 2012-05-31 15:21:23 |
| R27.htm | 22718 | 2012-05-31 15:21:23 |
| R28.htm | 45335 | 2012-05-31 15:21:23 |
| R29.htm | 10298 | 2012-05-31 15:21:23 |
| R3.htm | 30439 | 2012-05-31 15:21:23 |
| R30.htm | 6771 | 2012-05-31 15:21:23 |
| R31.htm | 45486 | 2012-05-31 15:21:23 |
| R32.htm | 19904 | 2012-05-31 15:21:23 |
| R33.htm | 40748 | 2012-05-31 15:21:23 |
| R34.htm | 10449 | 2012-05-31 15:21:23 |
| R35.htm | 24739 | 2012-05-31 15:21:23 |
| R36.htm | 20118 | 2012-05-31 15:21:23 |
| R37.htm | 26123 | 2012-05-31 15:21:23 |
| R38.htm | 8677 | 2012-05-31 15:21:23 |
| R39.htm | 25242 | 2012-05-31 15:21:23 |
| R4.htm | 78856 | 2012-05-31 15:21:23 |
| R40.htm | 36722 | 2012-05-31 15:21:23 |
| R41.htm | 36724 | 2012-05-31 15:21:23 |
| R42.htm | 14747 | 2012-05-31 15:21:23 |
| R43.htm | 38112 | 2012-05-31 15:21:23 |
| R44.htm | 11081 | 2012-05-31 15:21:23 |
| R45.htm | 12433 | 2012-05-31 15:21:23 |
| R46.htm | 40285 | 2012-05-31 15:21:23 |
| R47.htm | 29182 | 2012-05-31 15:21:23 |
| R48.htm | 34735 | 2012-05-31 15:21:23 |
| R49.htm | 6526 | 2012-05-31 15:21:23 |
| R5.htm | 77354 | 2012-05-31 15:21:23 |
| R50.htm | 21270 | 2012-05-31 15:21:23 |
| R51.htm | 45644 | 2012-05-31 15:21:23 |
| R52.htm | 3721 | 2012-05-31 15:21:23 |
| R53.htm | 24208 | 2012-05-31 15:21:23 |
| R54.htm | 9831 | 2012-05-31 15:21:23 |
| R55.htm | 10117 | 2012-05-31 15:21:23 |
| R56.htm | 9862 | 2012-05-31 15:21:23 |
| R6.htm | 4122 | 2012-05-31 15:21:23 |
| R7.htm | 128320 | 2012-05-31 15:21:23 |
| R8.htm | 14015 | 2012-05-31 15:21:23 |
| R9.htm | 33795 | 2012-05-31 15:21:23 |
| report.css | 2721 | 2012-05-31 15:21:23 |
| Show.js | 6423 | 2012-05-31 15:21:23 |