Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-12-378601-index-headers.html | 2012-09-04 11:50:06 | |
| 0001193125-12-378601-index.html | 2012-09-04 11:50:06 | |
| 0001193125-12-378601.txt | 2012-09-04 11:50:06 | |
 0001193125-12-378601-xbrl.zip | 112161 | 2012-09-04 11:50:06 |
| d358418d10q.htm | 772406 | 2012-09-04 11:50:06 |
| d358418dex311.htm | 6762 | 2012-09-04 11:50:06 |
| d358418dex312.htm | 6728 | 2012-09-04 11:50:06 |
| d358418dex321.htm | 3156 | 2012-09-04 11:50:06 |
| d358418dex322.htm | 3122 | 2012-09-04 11:50:06 |
| FilingSummary.xml | 29495 | 2012-09-04 11:50:06 |
| Financial_Report.xls | 1177552 | 2012-09-04 11:50:06 |
| pery-20120728.xml | 1387616 | 2012-09-04 11:50:06 |
| pery-20120728.xsd | 45203 | 2012-09-04 11:50:06 |
| pery-20120728_cal.xml | 72351 | 2012-09-04 11:50:06 |
| pery-20120728_def.xml | 141452 | 2012-09-04 11:50:06 |
| pery-20120728_lab.xml | 335300 | 2012-09-04 11:50:06 |
| pery-20120728_pre.xml | 280142 | 2012-09-04 11:50:06 |
| R1.htm | 26708 | 2012-09-04 11:50:06 |
| R10.htm | 13109 | 2012-09-04 11:50:06 |
| R11.htm | 24685 | 2012-09-04 11:50:06 |
| R12.htm | 13328 | 2012-09-04 11:50:06 |
| R13.htm | 8631 | 2012-09-04 11:50:06 |
| R14.htm | 10838 | 2012-09-04 11:50:06 |
| R15.htm | 8981 | 2012-09-04 11:50:06 |
| R16.htm | 5901 | 2012-09-04 11:50:06 |
| R17.htm | 32432 | 2012-09-04 11:50:06 |
| R18.htm | 22225 | 2012-09-04 11:50:06 |
| R19.htm | 14676 | 2012-09-04 11:50:06 |
| R2.htm | 148197 | 2012-09-04 11:50:06 |
| R20.htm | 24753 | 2012-09-04 11:50:06 |
| R21.htm | 11251 | 2012-09-04 11:50:06 |
| R22.htm | 11885 | 2012-09-04 11:50:06 |
| R23.htm | 54156 | 2012-09-04 11:50:06 |
| R24.htm | 25922 | 2012-09-04 11:50:06 |
| R25.htm | 15440 | 2012-09-04 11:50:06 |
| R26.htm | 312090 | 2012-09-04 11:50:06 |
| R27.htm | 6275 | 2012-09-04 11:50:06 |
| R28.htm | 10756 | 2012-09-04 11:50:06 |
| R29.htm | 25827 | 2012-09-04 11:50:06 |
| R3.htm | 32431 | 2012-09-04 11:50:06 |
| R30.htm | 11306 | 2012-09-04 11:50:06 |
| R31.htm | 10487 | 2012-09-04 11:50:06 |
| R32.htm | 29324 | 2012-09-04 11:50:06 |
| R33.htm | 13139 | 2012-09-04 11:50:06 |
| R34.htm | 11008 | 2012-09-04 11:50:06 |
| R35.htm | 15705 | 2012-09-04 11:50:06 |
| R36.htm | 49755 | 2012-09-04 11:50:06 |
| R37.htm | 18942 | 2012-09-04 11:50:06 |
| R38.htm | 311177 | 2012-09-04 11:50:06 |
| R39.htm | 21774 | 2012-09-04 11:50:06 |
| R4.htm | 80786 | 2012-09-04 11:50:06 |
| R40.htm | 12730 | 2012-09-04 11:50:06 |
| R41.htm | 19893 | 2012-09-04 11:50:06 |
| R42.htm | 14011 | 2012-09-04 11:50:06 |
| R43.htm | 6961 | 2012-09-04 11:50:06 |
| R44.htm | 12593 | 2012-09-04 11:50:06 |
| R45.htm | 11419 | 2012-09-04 11:50:06 |
| R46.htm | 23902 | 2012-09-04 11:50:06 |
| R47.htm | 9844 | 2012-09-04 11:50:06 |
| R48.htm | 39032 | 2012-09-04 11:50:06 |
| R49.htm | 5896 | 2012-09-04 11:50:06 |
| R5.htm | 22172 | 2012-09-04 11:50:06 |
| R50.htm | 48620 | 2012-09-04 11:50:06 |
| R51.htm | 18161 | 2012-09-04 11:50:06 |
| R52.htm | 21822 | 2012-09-04 11:50:06 |
| R53.htm | 8713 | 2012-09-04 11:50:06 |
| R54.htm | 15566 | 2012-09-04 11:50:06 |
| R55.htm | 24866 | 2012-09-04 11:50:06 |
| R56.htm | 40475 | 2012-09-04 11:50:06 |
| R57.htm | 32565 | 2012-09-04 11:50:06 |
| R58.htm | 24718 | 2012-09-04 11:50:06 |
| R59.htm | 20071 | 2012-09-04 11:50:06 |
| R6.htm | 184629 | 2012-09-04 11:50:06 |
| R60.htm | 99953 | 2012-09-04 11:50:06 |
| R61.htm | 44389 | 2012-09-04 11:50:06 |
| R62.htm | 117425 | 2012-09-04 11:50:06 |
| R63.htm | 4839 | 2012-09-04 11:50:06 |
| R64.htm | 14227 | 2012-09-04 11:50:06 |
| R7.htm | 12445 | 2012-09-04 11:50:06 |
| R8.htm | 14849 | 2012-09-04 11:50:06 |
| R9.htm | 14789 | 2012-09-04 11:50:06 |
| report.css | 2721 | 2012-09-04 11:50:06 |
| Show.js | 6423 | 2012-09-04 11:50:06 |