Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-22-000005-index-headers.html | 2022-01-18 17:11:22 | |
| 0000784977-22-000005-index.html | 2022-01-18 17:11:22 | |
| 0000784977-22-000005.txt | 2022-01-18 17:11:22 | |
 0000784977-22-000005-xbrl.zip | 13790 | 2022-01-18 17:11:22 |
| FilingSummary.xml | 1596 | 2022-01-18 17:11:22 |
| Financial_Report.xlsx | 5653 | 2022-01-18 17:11:22 |
| MetaLinks.json | 16717 | 2022-01-18 17:11:22 |
| por-20220118.htm | 53356 | 2022-01-18 17:11:22 |
| por-20220118.xsd | 1920 | 2022-01-18 17:11:22 |
| por-20220118_htm.xml | 10690 | 2022-01-18 17:11:22 |
| por-20220118_lab.xml | 23832 | 2022-01-18 17:11:22 |
| por-20220118_pre.xml | 12521 | 2022-01-18 17:11:22 |
| R1.htm | 38564 | 2022-01-18 17:11:22 |
| report.css | 2766 | 2022-01-18 17:11:22 |
| Show.js | 1084 | 2022-01-18 17:11:22 |