Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000880460-11-000004-index-headers.html | 2011-09-12 16:49:28 | |
| 0000880460-11-000004-index.html | 2011-09-12 16:49:28 | |
| 0000880460-11-000004.txt | 2011-09-12 16:49:28 | |
 0000880460-11-000004-xbrl.zip | 62838 | 2011-09-12 16:49:28 |
| a201173010-q.htm | 577468 | 2011-09-12 16:49:28 |
| a2011730ex311.htm | 14629 | 2011-09-12 16:49:28 |
| a2011730ex312.htm | 15079 | 2011-09-12 16:49:28 |
| a2011730ex321.htm | 8654 | 2011-09-12 16:49:28 |
| a2011730ex322.htm | 7628 | 2011-09-12 16:49:28 |
| FilingSummary.xml | 8804 | 2011-09-12 16:49:28 |
| Financial_Report.xls | 298443 | 2011-09-12 16:49:28 |
| perf-20110730.xml | 330091 | 2011-09-12 16:49:28 |
| perf-20110730.xsd | 15009 | 2011-09-12 16:49:28 |
| perf-20110730_cal.xml | 31645 | 2011-09-12 16:49:28 |
| perf-20110730_def.xml | 75063 | 2011-09-12 16:49:28 |
| perf-20110730_lab.xml | 179671 | 2011-09-12 16:49:28 |
| perf-20110730_pre.xml | 94514 | 2011-09-12 16:49:28 |
| R1.htm | 23301 | 2011-09-12 16:49:28 |
| R10.htm | 27083 | 2011-09-12 16:49:28 |
| R11.htm | 10986 | 2011-09-12 16:49:28 |
| R12.htm | 54904 | 2011-09-12 16:49:28 |
| R13.htm | 15485 | 2011-09-12 16:49:28 |
| R14.htm | 9895 | 2011-09-12 16:49:28 |
| R15.htm | 48879 | 2011-09-12 16:49:28 |
| R16.htm | 65687 | 2011-09-12 16:49:28 |
| R2.htm | 98321 | 2011-09-12 16:49:28 |
| R3.htm | 23067 | 2011-09-12 16:49:28 |
| R4.htm | 58985 | 2011-09-12 16:49:28 |
| R5.htm | 100734 | 2011-09-12 16:49:28 |
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| R7.htm | 6214 | 2011-09-12 16:49:28 |
| R8.htm | 50606 | 2011-09-12 16:49:28 |
| R9.htm | 37566 | 2011-09-12 16:49:28 |
| report.css | 2721 | 2011-09-12 16:49:28 |
| Show.js | 6423 | 2011-09-12 16:49:28 |