Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-026556-index-headers.html | 2020-05-21 16:17:08 | |
| 0001564590-20-026556-index.html | 2020-05-21 16:17:08 | |
| 0001564590-20-026556.txt | 2020-05-21 16:17:08 | |
 0001564590-20-026556-xbrl.zip | 279688 | 2020-05-21 16:17:08 |
| FilingSummary.xml | 34827 | 2020-05-21 16:17:08 |
| Financial_Report.xlsx | 79087 | 2020-05-21 16:17:08 |
| MetaLinks.json | 652842 | 2020-05-21 16:17:08 |
| pei-10q_20200331.htm | 3558203 | 2020-05-21 16:17:08 |
| pei-10q_20200331_htm.xml | 1936673 | 2020-05-21 16:17:08 |
| pei-20200331.xsd | 79900 | 2020-05-21 16:17:08 |
| pei-20200331_cal.xml | 94380 | 2020-05-21 16:17:08 |
| pei-20200331_def.xml | 244161 | 2020-05-21 16:17:08 |
| pei-20200331_lab.xml | 546273 | 2020-05-21 16:17:08 |
| pei-20200331_pre.xml | 407068 | 2020-05-21 16:17:08 |
| pei-ex101_67.htm | 259865 | 2020-05-21 16:17:08 |
| pei-ex102_69.htm | 33720 | 2020-05-21 16:17:08 |
| pei-ex103_68.htm | 24845 | 2020-05-21 16:17:08 |
| pei-ex107_87.htm | 12139 | 2020-05-21 16:17:08 |
| pei-ex311_8.htm | 22250 | 2020-05-21 16:17:08 |
| pei-ex312_7.htm | 20043 | 2020-05-21 16:17:08 |
| pei-ex321_6.htm | 8597 | 2020-05-21 16:17:08 |
| pei-ex322_9.htm | 8863 | 2020-05-21 16:17:08 |
| R1.htm | 63840 | 2020-05-21 16:17:08 |
| R10.htm | 33829 | 2020-05-21 16:17:08 |
| R11.htm | 59271 | 2020-05-21 16:17:08 |
| R12.htm | 234444 | 2020-05-21 16:17:08 |
| R13.htm | 113584 | 2020-05-21 16:17:08 |
| R14.htm | 24636 | 2020-05-21 16:17:08 |
| R15.htm | 9762 | 2020-05-21 16:17:08 |
| R16.htm | 115122 | 2020-05-21 16:17:08 |
| R17.htm | 203991 | 2020-05-21 16:17:08 |
| R18.htm | 45478 | 2020-05-21 16:17:08 |
| R19.htm | 56925 | 2020-05-21 16:17:08 |
| R2.htm | 86076 | 2020-05-21 16:17:08 |
| R20.htm | 233202 | 2020-05-21 16:17:08 |
| R21.htm | 103474 | 2020-05-21 16:17:08 |
| R22.htm | 21033 | 2020-05-21 16:17:08 |
| R23.htm | 111176 | 2020-05-21 16:17:08 |
| R24.htm | 206043 | 2020-05-21 16:17:08 |
| R25.htm | 34100 | 2020-05-21 16:17:08 |
| R26.htm | 23928 | 2020-05-21 16:17:08 |
| R27.htm | 22776 | 2020-05-21 16:17:08 |
| R28.htm | 13155 | 2020-05-21 16:17:08 |
| R29.htm | 13686 | 2020-05-21 16:17:08 |
| R3.htm | 29258 | 2020-05-21 16:17:08 |
| R30.htm | 33071 | 2020-05-21 16:17:08 |
| R31.htm | 41589 | 2020-05-21 16:17:08 |
| R32.htm | 52875 | 2020-05-21 16:17:08 |
| R33.htm | 4282 | 2020-05-21 16:17:08 |
| R34.htm | 17628 | 2020-05-21 16:17:08 |
| R35.htm | 22155 | 2020-05-21 16:17:08 |
| R36.htm | 129810 | 2020-05-21 16:17:08 |
| R37.htm | 42695 | 2020-05-21 16:17:08 |
| R38.htm | 11847 | 2020-05-21 16:17:08 |
| R39.htm | 11932 | 2020-05-21 16:17:08 |
| R4.htm | 93619 | 2020-05-21 16:17:08 |
| R40.htm | 6144 | 2020-05-21 16:17:08 |
| R41.htm | 16486 | 2020-05-21 16:17:08 |
| R42.htm | 18019 | 2020-05-21 16:17:08 |
| R43.htm | 14827 | 2020-05-21 16:17:08 |
| R44.htm | 16357 | 2020-05-21 16:17:08 |
| R45.htm | 7127 | 2020-05-21 16:17:08 |
| R46.htm | 13938 | 2020-05-21 16:17:08 |
| R47.htm | 17190 | 2020-05-21 16:17:08 |
| R48.htm | 19513 | 2020-05-21 16:17:08 |
| R49.htm | 11133 | 2020-05-21 16:17:08 |
| R5.htm | 4820 | 2020-05-21 16:17:08 |
| R50.htm | 14034 | 2020-05-21 16:17:08 |
| R51.htm | 21492 | 2020-05-21 16:17:08 |
| R52.htm | 17955 | 2020-05-21 16:17:08 |
| R53.htm | 61875 | 2020-05-21 16:17:08 |
| R54.htm | 16647 | 2020-05-21 16:17:08 |
| R6.htm | 20817 | 2020-05-21 16:17:08 |
| R7.htm | 44085 | 2020-05-21 16:17:08 |
| R8.htm | 17118 | 2020-05-21 16:17:08 |
| R9.htm | 87912 | 2020-05-21 16:17:08 |
| report.css | 2767 | 2020-05-21 16:17:08 |
| Show.js | 1085 | 2020-05-21 16:17:08 |