Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000320575-21-000006-index-headers.html | 2021-01-06 15:41:23 | |
| 0000320575-21-000006-index.html | 2021-01-06 15:41:23 | |
| 0000320575-21-000006.txt | 2021-01-06 15:41:23 | |
 0000320575-21-000006-xbrl.zip | 12613 | 2021-01-06 15:41:23 |
| FilingSummary.xml | 1676 | 2021-01-06 15:41:23 |
| Financial_Report.xlsx | 5434 | 2021-01-06 15:41:23 |
| MetaLinks.json | 17371 | 2021-01-06 15:41:23 |
| pes-20201231.htm | 32129 | 2021-01-06 15:41:23 |
| pes-20201231.xsd | 2439 | 2021-01-06 15:41:23 |
| pes-20201231_cal.xml | 723 | 2021-01-06 15:41:23 |
| pes-20201231_def.xml | 1656 | 2021-01-06 15:41:23 |
| pes-20201231_htm.xml | 11274 | 2021-01-06 15:41:23 |
| pes-20201231_lab.xml | 23970 | 2021-01-06 15:41:23 |
| pes-20201231_pre.xml | 12659 | 2021-01-06 15:41:23 |
| R1.htm | 38577 | 2021-01-06 15:41:23 |
| report.css | 2767 | 2021-01-06 15:41:23 |
| Show.js | 1085 | 2021-01-06 15:41:23 |