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|---|---|---|
 0000784977-20-000082-index-headers.html | 2020-12-18 07:01:08 | |
| 0000784977-20-000082-index.html | 2020-12-18 07:01:08 | |
| 0000784977-20-000082.txt | 2020-12-18 07:01:08 | |
 0000784977-20-000082-xbrl.zip | 23395 | 2020-12-18 07:01:08 |
| employeefaq.htm | 7018 | 2020-12-18 07:01:08 |
 employeefaq001.jpg | 224915 | 2020-12-18 07:01:08 |
 employeefaq002.jpg | 98288 | 2020-12-18 07:01:08 |
 employeefaq003.jpg | 232331 | 2020-12-18 07:01:08 |
| FilingSummary.xml | 1869 | 2020-12-18 07:01:08 |
| Financial_Report.xlsx | 5524 | 2020-12-18 07:01:08 |
| MetaLinks.json | 20730 | 2020-12-18 07:01:08 |
| por-20201218.htm | 38922 | 2020-12-18 07:01:08 |
| por-20201218.xsd | 2580 | 2020-12-18 07:01:08 |
| por-20201218_cal.xml | 723 | 2020-12-18 07:01:08 |
| por-20201218_def.xml | 6372 | 2020-12-18 07:01:08 |
| por-20201218_htm.xml | 13203 | 2020-12-18 07:01:08 |
| por-20201218_lab.xml | 29958 | 2020-12-18 07:01:08 |
| por-20201218_pre.xml | 16025 | 2020-12-18 07:01:08 |
| R1.htm | 41955 | 2020-12-18 07:01:08 |
| report.css | 2767 | 2020-12-18 07:01:08 |
| Show.js | 1085 | 2020-12-18 07:01:08 |
| specialcommitteeconcl714.htm | 7502 | 2020-12-18 07:01:08 |
 specialcommitteeconcl714001.jpg | 264781 | 2020-12-18 07:01:08 |
 specialcommitteeconcl714002.jpg | 85491 | 2020-12-18 07:01:08 |
 specialcommitteeconcl714003.jpg | 232871 | 2020-12-18 07:01:08 |
| specialcommitteeconclusi.htm | 9071 | 2020-12-18 07:01:08 |
 specialcommitteeconclusi001.jpg | 240895 | 2020-12-18 07:01:08 |
 specialcommitteeconclusi002.jpg | 282670 | 2020-12-18 07:01:08 |
 specialcommitteeconclusi003.jpg | 164972 | 2020-12-18 07:01:08 |