Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-21-000078-index-headers.html | 2021-12-20 21:15:02 | |
| 0000784977-21-000078-index.html | 2021-12-20 21:15:02 | |
| 0000784977-21-000078.txt | 2021-12-20 21:15:02 | |
 0000784977-21-000078-xbrl.zip | 11042 | 2021-12-20 21:15:02 |
| FilingSummary.xml | 1602 | 2021-12-20 21:15:02 |
| Financial_Report.xlsx | 5653 | 2021-12-20 21:15:02 |
| MetaLinks.json | 17035 | 2021-12-20 21:15:02 |
| por-20211217.htm | 33679 | 2021-12-20 21:15:02 |
| por-20211217.xsd | 1932 | 2021-12-20 21:15:02 |
| por-20211217_htm.xml | 10696 | 2021-12-20 21:15:02 |
| por-20211217_lab.xml | 23970 | 2021-12-20 21:15:02 |
| por-20211217_pre.xml | 12659 | 2021-12-20 21:15:02 |
| R1.htm | 38603 | 2021-12-20 21:15:02 |
| report.css | 2766 | 2021-12-20 21:15:02 |
| Show.js | 1084 | 2021-12-20 21:15:02 |