Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-21-000030-index-headers.html | 2021-06-02 17:55:59 | |
| 0000784977-21-000030-index.html | 2021-06-02 17:55:59 | |
| 0000784977-21-000030.txt | 2021-06-02 17:55:59 | |
 0000784977-21-000030-xbrl.zip | 13624 | 2021-06-02 17:55:59 |
| FilingSummary.xml | 1707 | 2021-06-02 17:55:59 |
| Financial_Report.xlsx | 5747 | 2021-06-02 17:55:59 |
| MetaLinks.json | 20646 | 2021-06-02 17:55:59 |
| por-20210602.htm | 36075 | 2021-06-02 17:55:59 |
| por-20210602.xsd | 2326 | 2021-06-02 17:55:59 |
| por-20210602_def.xml | 6372 | 2021-06-02 17:55:59 |
| por-20210602_htm.xml | 13203 | 2021-06-02 17:55:59 |
| por-20210602_lab.xml | 29958 | 2021-06-02 17:55:59 |
| por-20210602_pre.xml | 16025 | 2021-06-02 17:55:59 |
| R1.htm | 41955 | 2021-06-02 17:55:59 |
| report.css | 2767 | 2021-06-02 17:55:59 |
| Show.js | 1084 | 2021-06-02 17:55:59 |