Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-22-000084-index-headers.html | 2022-11-30 17:43:23 | |
| 0000784977-22-000084-index.html | 2022-11-30 17:43:23 | |
| 0000784977-22-000084.txt | 2022-11-30 17:43:23 | |
 0000784977-22-000084-xbrl.zip | 36177 | 2022-11-30 17:43:23 |
| exhibit41.htm | 318831 | 2022-11-30 17:43:23 |
| FilingSummary.xml | 1639 | 2022-11-30 17:43:23 |
| Financial_Report.xlsx | 5677 | 2022-11-30 17:43:23 |
| MetaLinks.json | 16714 | 2022-11-30 17:43:23 |
| por-20221130.htm | 39458 | 2022-11-30 17:43:23 |
| por-20221130.xsd | 1920 | 2022-11-30 17:43:23 |
| por-20221130_htm.xml | 10710 | 2022-11-30 17:43:23 |
| por-20221130_lab.xml | 23832 | 2022-11-30 17:43:23 |
| por-20221130_pre.xml | 12521 | 2022-11-30 17:43:23 |
| R1.htm | 38083 | 2022-11-30 17:43:23 |
| report.css | 2767 | 2022-11-30 17:43:23 |
| Show.js | 1084 | 2022-11-30 17:43:23 |