Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-21-000041-index-headers.html | 2021-07-16 19:20:34 | |
| 0000784977-21-000041-index.html | 2021-07-16 19:20:34 | |
| 0000784977-21-000041.txt | 2021-07-16 19:20:34 | |
 0000784977-21-000041-xbrl.zip | 13138 | 2021-07-16 19:20:34 |
| FilingSummary.xml | 1707 | 2021-07-16 19:20:34 |
| Financial_Report.xlsx | 5744 | 2021-07-16 19:20:34 |
| MetaLinks.json | 20646 | 2021-07-16 19:20:34 |
| por-20210716.htm | 34975 | 2021-07-16 19:20:34 |
| por-20210716.xsd | 2326 | 2021-07-16 19:20:34 |
| por-20210716_def.xml | 6372 | 2021-07-16 19:20:34 |
| por-20210716_htm.xml | 13203 | 2021-07-16 19:20:34 |
| por-20210716_lab.xml | 29958 | 2021-07-16 19:20:34 |
| por-20210716_pre.xml | 16025 | 2021-07-16 19:20:34 |
| R1.htm | 41954 | 2021-07-16 19:20:34 |
| report.css | 2767 | 2021-07-16 19:20:34 |
| Show.js | 1084 | 2021-07-16 19:20:34 |