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|---|---|---|
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| 0000880460-13-000020-index.html | 2013-06-17 17:41:09 | |
| 0000880460-13-000020.txt | 2013-06-17 17:41:09 | |
 0000880460-13-000020-xbrl.zip | 136707 | 2013-06-17 17:41:09 |
| a2013050410-q1stqtr.htm | 566766 | 2013-06-17 17:41:09 |
| a20130504ex311.htm | 14354 | 2013-06-17 17:41:09 |
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| a20130504ex321.htm | 6669 | 2013-06-17 17:41:09 |
| a20130504ex322.htm | 6685 | 2013-06-17 17:41:09 |
| FilingSummary.xml | 23703 | 2013-06-17 17:41:09 |
| Financial_Report.xls | 599529 | 2013-06-17 17:41:09 |
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| perf-20130504.xsd | 47906 | 2013-06-17 17:41:09 |
| perf-20130504_cal.xml | 46069 | 2013-06-17 17:41:09 |
| perf-20130504_def.xml | 268619 | 2013-06-17 17:41:09 |
| perf-20130504_lab.xml | 520806 | 2013-06-17 17:41:09 |
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| report.css | 2721 | 2013-06-17 17:41:09 |
| Show.js | 6423 | 2013-06-17 17:41:09 |