Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000880460-12-000059-index-headers.html | 2012-06-12 16:57:28 | |
| 0000880460-12-000059-index.html | 2012-06-12 16:57:28 | |
| 0000880460-12-000059.txt | 2012-06-12 16:57:28 | |
 0000880460-12-000059-xbrl.zip | 75754 | 2012-06-12 16:57:28 |
| a201242810-q1stqtr.htm | 702951 | 2012-06-12 16:57:28 |
| a2012428ex311.htm | 14355 | 2012-06-12 16:57:28 |
| a2012428ex312.htm | 14805 | 2012-06-12 16:57:28 |
| a2012428ex321.htm | 6673 | 2012-06-12 16:57:28 |
| a2012428ex322.htm | 6671 | 2012-06-12 16:57:28 |
| FilingSummary.xml | 9408 | 2012-06-12 16:57:28 |
| Financial_Report.xls | 337440 | 2012-06-12 16:57:28 |
| perf-20120428.xml | 372828 | 2012-06-12 16:57:28 |
| perf-20120428.xsd | 16036 | 2012-06-12 16:57:28 |
| perf-20120428_cal.xml | 36079 | 2012-06-12 16:57:28 |
| perf-20120428_def.xml | 98044 | 2012-06-12 16:57:28 |
| perf-20120428_lab.xml | 216046 | 2012-06-12 16:57:28 |
| perf-20120428_pre.xml | 118430 | 2012-06-12 16:57:28 |
| R1.htm | 24872 | 2012-06-12 16:57:28 |
| R10.htm | 60100 | 2012-06-12 16:57:28 |
| R11.htm | 70006 | 2012-06-12 16:57:28 |
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| R2.htm | 103692 | 2012-06-12 16:57:28 |
| R3.htm | 23758 | 2012-06-12 16:57:28 |
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| R8.htm | 78190 | 2012-06-12 16:57:28 |
| R9.htm | 6049 | 2012-06-12 16:57:28 |
| report.css | 2721 | 2012-06-12 16:57:28 |
| Show.js | 6423 | 2012-06-12 16:57:28 |