Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-20-000070-index-headers.html | 2020-10-30 08:55:08 | |
| 0000784977-20-000070-index.html | 2020-10-30 08:55:08 | |
| 0000784977-20-000070.txt | 2020-10-30 08:55:08 | |
 0000784977-20-000070-xbrl.zip | 35356 | 2020-10-30 08:55:08 |
| ex99120200930pressrele.htm | 436136 | 2020-10-30 08:55:08 |
| FilingSummary.xml | 1834 | 2020-10-30 08:55:08 |
| Financial_Report.xlsx | 5545 | 2020-10-30 08:55:08 |
 logoa051.jpg | 12600 | 2020-10-30 08:55:08 |
| MetaLinks.json | 20730 | 2020-10-30 08:55:08 |
| por-20201030.htm | 38777 | 2020-10-30 08:55:08 |
| por-20201030.xsd | 2580 | 2020-10-30 08:55:08 |
| por-20201030_cal.xml | 723 | 2020-10-30 08:55:08 |
| por-20201030_def.xml | 6372 | 2020-10-30 08:55:08 |
| por-20201030_htm.xml | 13528 | 2020-10-30 08:55:08 |
| por-20201030_lab.xml | 29958 | 2020-10-30 08:55:08 |
| por-20201030_pre.xml | 16025 | 2020-10-30 08:55:08 |
| q32020earningsslides_fin.htm | 17497 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin001.jpg | 108033 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin002.jpg | 189659 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin003.jpg | 56067 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin004.jpg | 92140 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin005.jpg | 90176 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin006.jpg | 58872 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin007.jpg | 72435 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin008.jpg | 64371 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin009.jpg | 119811 | 2020-10-30 08:55:08 |
 q32020earningsslides_fin010.jpg | 120374 | 2020-10-30 08:55:08 |
| R1.htm | 43295 | 2020-10-30 08:55:08 |
| report.css | 2767 | 2020-10-30 08:55:08 |
| Show.js | 1085 | 2020-10-30 08:55:08 |