Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-22-000049-index-headers.html | 2022-07-28 08:51:19 | |
| 0000784977-22-000049-index.html | 2022-07-28 08:51:19 | |
| 0000784977-22-000049.txt | 2022-07-28 08:51:19 | |
 0000784977-22-000049-xbrl.zip | 36055 | 2022-07-28 08:51:19 |
| ex99120220630pressrelease.htm | 452298 | 2022-07-28 08:51:19 |
| FilingSummary.xml | 1701 | 2022-07-28 08:51:19 |
| Financial_Report.xlsx | 5678 | 2022-07-28 08:51:19 |
 imagea.jpg | 18768 | 2022-07-28 08:51:19 |
| MetaLinks.json | 16766 | 2022-07-28 08:51:19 |
| por-20220728.htm | 35497 | 2022-07-28 08:51:19 |
| por-20220728.xsd | 1926 | 2022-07-28 08:51:19 |
| por-20220728_htm.xml | 10712 | 2022-07-28 08:51:19 |
| por-20220728_lab.xml | 23924 | 2022-07-28 08:51:19 |
| por-20220728_pre.xml | 12613 | 2022-07-28 08:51:19 |
| q22022earningsslidesfina.htm | 16849 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina001.jpg | 133752 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina002.jpg | 230236 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina003.jpg | 62268 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina004.jpg | 138288 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina005.jpg | 70874 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina006.jpg | 52999 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina007.jpg | 66581 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina008.jpg | 70115 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina009.jpg | 112679 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina010.jpg | 121470 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina011.jpg | 151856 | 2022-07-28 08:51:19 |
 q22022earningsslidesfina012.jpg | 111965 | 2022-07-28 08:51:19 |
| R1.htm | 38534 | 2022-07-28 08:51:19 |
| report.css | 2767 | 2022-07-28 08:51:19 |
| Show.js | 1085 | 2022-07-28 08:51:19 |