Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000784977-23-000114-index.html | 2023-07-28 09:00:33 | |
| 0000784977-23-000114.txt | 2023-07-28 09:00:33 | |
 0000784977-23-000114-xbrl.zip | 36117 | 2023-07-28 09:00:33 |
| ex99120230630pressrelease.htm | 468189 | 2023-07-28 09:00:33 |
| FilingSummary.xml | 1699 | 2023-07-28 09:00:33 |
| Financial_Report.xlsx | 5678 | 2023-07-28 09:00:33 |
 image.jpg | 18768 | 2023-07-28 09:00:33 |
| MetaLinks.json | 17148 | 2023-07-28 09:00:33 |
| por-20230728.htm | 27796 | 2023-07-28 09:00:33 |
| por-20230728.xsd | 1922 | 2023-07-28 09:00:33 |
| por-20230728_htm.xml | 2711 | 2023-07-28 09:00:33 |
| por-20230728_lab.xml | 23834 | 2023-07-28 09:00:33 |
| por-20230728_pre.xml | 12523 | 2023-07-28 09:00:33 |
| q22023earningsslides_fin.htm | 19712 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin001.jpg | 75413 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin002.jpg | 227516 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin003.jpg | 67625 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin004.jpg | 132141 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin005.jpg | 75924 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin006.jpg | 53507 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin007.jpg | 71343 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin008.jpg | 113426 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin009.jpg | 121316 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin010.jpg | 161983 | 2023-07-28 09:00:33 |
 q22023earningsslides_fin011.jpg | 112708 | 2023-07-28 09:00:33 |
| R1.htm | 38082 | 2023-07-28 09:00:33 |
| report.css | 2767 | 2023-07-28 09:00:33 |
| Show.js | 1085 | 2023-07-28 09:00:33 |