Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-25-000078-index-headers.html | 2025-04-25 09:00:24 | |
| 0000784977-25-000078-index.html | 2025-04-25 09:00:24 | |
| 0000784977-25-000078.txt | 2025-04-25 09:00:24 | |
 0000784977-25-000078-xbrl.zip | 36114 | 2025-04-25 09:00:24 |
| ex99120250331pressrelease.htm | 432020 | 2025-04-25 09:00:24 |
| FilingSummary.xml | 1623 | 2025-04-25 09:00:24 |
| Financial_Report.xlsx | 5697 | 2025-04-25 09:00:24 |
 image.jpg | 18768 | 2025-04-25 09:00:24 |
| MetaLinks.json | 17147 | 2025-04-25 09:00:24 |
| por-20250425.htm | 27698 | 2025-04-25 09:00:24 |
| por-20250425.xsd | 1803 | 2025-04-25 09:00:24 |
| por-20250425_htm.xml | 2711 | 2025-04-25 09:00:24 |
| por-20250425_lab.xml | 21629 | 2025-04-25 09:00:24 |
| por-20250425_pre.xml | 12523 | 2025-04-25 09:00:24 |
| q12025earningsslides_fin.htm | 20757 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin001.jpg | 75027 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin002.jpg | 289265 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin003.jpg | 66633 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin004.jpg | 123287 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin005.jpg | 42929 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin006.jpg | 74058 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin007.jpg | 105337 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin008.jpg | 125828 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin009.jpg | 143951 | 2025-04-25 09:00:24 |
 q12025earningsslides_fin010.jpg | 73318 | 2025-04-25 09:00:24 |
| R1.htm | 38066 | 2025-04-25 09:00:24 |
| report.css | 2767 | 2025-04-25 09:00:24 |
| Show.js | 1085 | 2025-04-25 09:00:24 |