Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-20-000077-index-headers.html | 2020-12-10 21:41:49 | |
| 0000784977-20-000077-index.html | 2020-12-10 21:41:49 | |
| 0000784977-20-000077.txt | 2020-12-10 21:41:49 | |
 0000784977-20-000077-xbrl.zip | 38816 | 2020-12-10 21:41:49 |
| FilingSummary.xml | 1788 | 2020-12-10 21:41:49 |
| Financial_Report.xlsx | 5523 | 2020-12-10 21:41:49 |
| MetaLinks.json | 20730 | 2020-12-10 21:41:49 |
| por-20201210.htm | 39481 | 2020-12-10 21:41:49 |
| por-20201210.xsd | 2580 | 2020-12-10 21:41:49 |
| por-20201210_cal.xml | 723 | 2020-12-10 21:41:49 |
| por-20201210_def.xml | 6372 | 2020-12-10 21:41:49 |
| por-20201210_htm.xml | 13203 | 2020-12-10 21:41:49 |
| por-20201210_lab.xml | 29958 | 2020-12-10 21:41:49 |
| por-20201210_pre.xml | 16025 | 2020-12-10 21:41:49 |
| por-78thsupplementalin.htm | 313016 | 2020-12-10 21:41:49 |
| R1.htm | 41954 | 2020-12-10 21:41:49 |
| report.css | 2767 | 2020-12-10 21:41:49 |
| Show.js | 1085 | 2020-12-10 21:41:49 |