Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-23-000057-index-headers.html | 2023-04-24 16:59:54 | |
| 0000784977-23-000057-index.html | 2023-04-24 16:59:54 | |
| 0000784977-23-000057.txt | 2023-04-24 16:59:54 | |
 0000784977-23-000057-xbrl.zip | 11699 | 2023-04-24 16:59:54 |
| FilingSummary.xml | 1606 | 2023-04-24 16:59:54 |
| Financial_Report.xlsx | 5679 | 2023-04-24 16:59:54 |
| MetaLinks.json | 17246 | 2023-04-24 16:59:54 |
| por-20230421.htm | 58045 | 2023-04-24 16:59:54 |
| por-20230421.xsd | 1920 | 2023-04-24 16:59:54 |
| por-20230421_htm.xml | 10710 | 2023-04-24 16:59:54 |
| por-20230421_lab.xml | 23832 | 2023-04-24 16:59:54 |
| por-20230421_pre.xml | 12521 | 2023-04-24 16:59:54 |
| R1.htm | 38081 | 2023-04-24 16:59:54 |
| report.css | 2766 | 2023-04-24 16:59:54 |
| Show.js | 1084 | 2023-04-24 16:59:54 |