Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-22-000068-index-headers.html | 2022-09-13 18:11:38 | |
| 0000784977-22-000068-index.html | 2022-09-13 18:11:38 | |
| 0000784977-22-000068.txt | 2022-09-13 18:11:38 | |
 0000784977-22-000068-xbrl.zip | 120092 | 2022-09-13 18:11:38 |
| exhibit101.htm | 950979 | 2022-09-13 18:11:38 |
| FilingSummary.xml | 1640 | 2022-09-13 18:11:38 |
| Financial_Report.xlsx | 5679 | 2022-09-13 18:11:38 |
| MetaLinks.json | 16714 | 2022-09-13 18:11:38 |
| por-20220909.htm | 40557 | 2022-09-13 18:11:38 |
| por-20220909.xsd | 1920 | 2022-09-13 18:11:38 |
| por-20220909_htm.xml | 10710 | 2022-09-13 18:11:38 |
| por-20220909_lab.xml | 23832 | 2022-09-13 18:11:38 |
| por-20220909_pre.xml | 12521 | 2022-09-13 18:11:38 |
| R1.htm | 38084 | 2022-09-13 18:11:38 |
| report.css | 2767 | 2022-09-13 18:11:38 |
| Show.js | 1084 | 2022-09-13 18:11:38 |