Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-21-000063-index-headers.html | 2021-09-30 17:52:40 | |
| 0000784977-21-000063-index.html | 2021-09-30 17:52:40 | |
| 0000784977-21-000063.txt | 2021-09-30 17:52:40 | |
 0000784977-21-000063-xbrl.zip | 38226 | 2021-09-30 17:52:40 |
| FilingSummary.xml | 1649 | 2021-09-30 17:52:40 |
| Financial_Report.xlsx | 5655 | 2021-09-30 17:52:40 |
| MetaLinks.json | 17034 | 2021-09-30 17:52:40 |
| por-20210930.htm | 40122 | 2021-09-30 17:52:40 |
| por-20210930.xsd | 1932 | 2021-09-30 17:52:40 |
| por-20210930_htm.xml | 10696 | 2021-09-30 17:52:40 |
| por-20210930_lab.xml | 23970 | 2021-09-30 17:52:40 |
| por-20210930_pre.xml | 12659 | 2021-09-30 17:52:40 |
| R1.htm | 38603 | 2021-09-30 17:52:40 |
| report.css | 2767 | 2021-09-30 17:52:40 |
| seventy-ninthsupplementali.htm | 431013 | 2021-09-30 17:52:40 |
| Show.js | 1084 | 2021-09-30 17:52:40 |