Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000077281-18-000041-index-headers.html | 2018-05-04 15:35:59 | |
| 0000077281-18-000041-index.html | 2018-05-04 15:35:59 | |
| 0000077281-18-000041.txt | 2018-05-04 15:35:59 | |
 0000077281-18-000041-xbrl.zip | 162500 | 2018-05-04 15:35:59 |
| a2018q110q03-31x2018.htm | 1313943 | 2018-05-04 15:35:59 |
| a2018q1exhibit101.htm | 182304 | 2018-05-04 15:35:59 |
| a2018q1exhibit102.htm | 39001 | 2018-05-04 15:35:59 |
| a2018q1exhibit103.htm | 22408 | 2018-05-04 15:35:59 |
| a2018q1exhibit311.htm | 15572 | 2018-05-04 15:35:59 |
| a2018q1exhibit312.htm | 13878 | 2018-05-04 15:35:59 |
| a2018q1exhibit321.htm | 6303 | 2018-05-04 15:35:59 |
| a2018q1exhibit322.htm | 6425 | 2018-05-04 15:35:59 |
| FilingSummary.xml | 25962 | 2018-05-04 15:35:59 |
| Financial_Report.xlsx | 59113 | 2018-05-04 15:35:59 |
| pei-20180331.xml | 718224 | 2018-05-04 15:35:59 |
| pei-20180331.xsd | 51197 | 2018-05-04 15:35:59 |
| pei-20180331_cal.xml | 80845 | 2018-05-04 15:35:59 |
| pei-20180331_def.xml | 262244 | 2018-05-04 15:35:59 |
| pei-20180331_lab.xml | 570369 | 2018-05-04 15:35:59 |
| pei-20180331_pre.xml | 372000 | 2018-05-04 15:35:59 |
| R1.htm | 22008 | 2018-05-04 15:35:59 |
| R10.htm | 32740 | 2018-05-04 15:35:59 |
| R11.htm | 32869 | 2018-05-04 15:35:59 |
| R12.htm | 105066 | 2018-05-04 15:35:59 |
| R13.htm | 52437 | 2018-05-04 15:35:59 |
| R14.htm | 18300 | 2018-05-04 15:35:59 |
| R15.htm | 6208 | 2018-05-04 15:35:59 |
| R16.htm | 59812 | 2018-05-04 15:35:59 |
| R17.htm | 68133 | 2018-05-04 15:35:59 |
| R18.htm | 32726 | 2018-05-04 15:35:59 |
| R19.htm | 72520 | 2018-05-04 15:35:59 |
| R2.htm | 89347 | 2018-05-04 15:35:59 |
| R20.htm | 42617 | 2018-05-04 15:35:59 |
| R21.htm | 52509 | 2018-05-04 15:35:59 |
| R22.htm | 16209 | 2018-05-04 15:35:59 |
| R23.htm | 11010 | 2018-05-04 15:35:59 |
| R24.htm | 4434 | 2018-05-04 15:35:59 |
| R25.htm | 15283 | 2018-05-04 15:35:59 |
| R26.htm | 16078 | 2018-05-04 15:35:59 |
| R27.htm | 13766 | 2018-05-04 15:35:59 |
| R28.htm | 12706 | 2018-05-04 15:35:59 |
| R29.htm | 42501 | 2018-05-04 15:35:59 |
| R3.htm | 31092 | 2018-05-04 15:35:59 |
| R30.htm | 7966 | 2018-05-04 15:35:59 |
| R31.htm | 41094 | 2018-05-04 15:35:59 |
| R32.htm | 33459 | 2018-05-04 15:35:59 |
| R33.htm | 35040 | 2018-05-04 15:35:59 |
| R34.htm | 24200 | 2018-05-04 15:35:59 |
| R35.htm | 6860 | 2018-05-04 15:35:59 |
| R36.htm | 19892 | 2018-05-04 15:35:59 |
| R37.htm | 17097 | 2018-05-04 15:35:59 |
| R38.htm | 10380 | 2018-05-04 15:35:59 |
| R39.htm | 12551 | 2018-05-04 15:35:59 |
| R4.htm | 84357 | 2018-05-04 15:35:59 |
| R40.htm | 5651 | 2018-05-04 15:35:59 |
| R41.htm | 17583 | 2018-05-04 15:35:59 |
| R42.htm | 17112 | 2018-05-04 15:35:59 |
| R43.htm | 12052 | 2018-05-04 15:35:59 |
| R5.htm | 4824 | 2018-05-04 15:35:59 |
| R6.htm | 17649 | 2018-05-04 15:35:59 |
| R7.htm | 29534 | 2018-05-04 15:35:59 |
| R8.htm | 9097 | 2018-05-04 15:35:59 |
| R9.htm | 88366 | 2018-05-04 15:35:59 |
| report.css | 2767 | 2018-05-04 15:35:59 |
| Show.js | 1410 | 2018-05-04 15:35:59 |