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| 0000077281-17-000043-index.html | 2017-08-09 13:01:30 | |
| 0000077281-17-000043.txt | 2017-08-09 13:01:30 | |
 0000077281-17-000043-xbrl.zip | 202135 | 2017-08-09 13:01:30 |
| a2017q210q06-30x17.htm | 1777486 | 2017-08-09 13:01:30 |
| a2017q2exhibit311.htm | 15575 | 2017-08-09 13:01:30 |
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| a2017q2exhibit322.htm | 6427 | 2017-08-09 13:01:30 |
| FilingSummary.xml | 27976 | 2017-08-09 13:01:30 |
| Financial_Report.xlsx | 66276 | 2017-08-09 13:01:30 |
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| pei-20170630.xsd | 62364 | 2017-08-09 13:01:30 |
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| pei-20170630_def.xml | 292946 | 2017-08-09 13:01:30 |
| pei-20170630_lab.xml | 647729 | 2017-08-09 13:01:30 |
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| report.css | 2767 | 2017-08-09 13:01:30 |
| Show.js | 1410 | 2017-08-09 13:01:30 |