Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-013821-index-headers.html | 2022-01-20 16:30:59 | |
| 0001193125-22-013821-index.html | 2022-01-20 16:30:59 | |
| 0001193125-22-013821.txt | 2022-01-20 16:30:59 | |
 0001193125-22-013821-xbrl.zip | 27754 | 2022-01-20 16:30:59 |
| d277470d8k.htm | 29711 | 2022-01-20 16:30:59 |
| d277470d8k_htm.xml | 3268 | 2022-01-20 16:30:59 |
| d277470dex101.htm | 87778 | 2022-01-20 16:30:59 |
| d277470dex991.htm | 6228 | 2022-01-20 16:30:59 |
| FilingSummary.xml | 1759 | 2022-01-20 16:30:59 |
| Financial_Report.xlsx | 5678 | 2022-01-20 16:30:59 |
 g277470g67s95.jpg | 4024 | 2022-01-20 16:30:59 |
| MetaLinks.json | 17781 | 2022-01-20 16:30:59 |
| prdo-20220119.xsd | 2866 | 2022-01-20 16:30:59 |
| prdo-20220119_lab.xml | 17236 | 2022-01-20 16:30:59 |
| prdo-20220119_pre.xml | 10819 | 2022-01-20 16:30:59 |
| R1.htm | 38578 | 2022-01-20 16:30:59 |
| report.css | 2767 | 2022-01-20 16:30:59 |
| Show.js | 1085 | 2022-01-20 16:30:59 |