Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-23-000050-index-headers.html | 2023-03-16 16:12:51 | |
| 0000784977-23-000050-index.html | 2023-03-16 16:12:51 | |
| 0000784977-23-000050.txt | 2023-03-16 16:12:51 | |
 0000784977-23-000050-xbrl.zip | 9957 | 2023-03-16 16:12:51 |
| FilingSummary.xml | 1606 | 2023-03-16 16:12:51 |
| Financial_Report.xlsx | 5680 | 2023-03-16 16:12:51 |
| MetaLinks.json | 17246 | 2023-03-16 16:12:51 |
| por-20230316.htm | 27473 | 2023-03-16 16:12:51 |
| por-20230316.xsd | 1920 | 2023-03-16 16:12:51 |
| por-20230316_htm.xml | 4102 | 2023-03-16 16:12:51 |
| por-20230316_lab.xml | 23832 | 2023-03-16 16:12:51 |
| por-20230316_pre.xml | 12521 | 2023-03-16 16:12:51 |
| R1.htm | 38081 | 2023-03-16 16:12:51 |
| report.css | 2766 | 2023-03-16 16:12:51 |
| Show.js | 1084 | 2023-03-16 16:12:51 |