Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-23-000083-index-headers.html | 2023-06-15 17:18:51 | |
| 0000784977-23-000083-index.html | 2023-06-15 17:18:51 | |
| 0000784977-23-000083.txt | 2023-06-15 17:18:51 | |
 0000784977-23-000083-xbrl.zip | 11201 | 2023-06-15 17:18:51 |
| FilingSummary.xml | 1606 | 2023-06-15 17:18:51 |
| Financial_Report.xlsx | 5681 | 2023-06-15 17:18:51 |
| MetaLinks.json | 17246 | 2023-06-15 17:18:51 |
| por-20230615.htm | 34681 | 2023-06-15 17:18:51 |
| por-20230615.xsd | 1922 | 2023-06-15 17:18:51 |
| por-20230615_htm.xml | 10710 | 2023-06-15 17:18:51 |
| por-20230615_lab.xml | 23834 | 2023-06-15 17:18:51 |
| por-20230615_pre.xml | 12523 | 2023-06-15 17:18:51 |
| R1.htm | 38081 | 2023-06-15 17:18:51 |
| report.css | 2766 | 2023-06-15 17:18:51 |
| Show.js | 1084 | 2023-06-15 17:18:51 |