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| 0000784977-22-000045.txt | 2022-07-27 20:04:00 | |
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| ex31110-q20220630.htm | 10869 | 2022-07-27 20:04:00 |
| ex31210-q20220630.htm | 10890 | 2022-07-27 20:04:00 |
| ex3210-q20220630.htm | 7431 | 2022-07-27 20:04:00 |
| FilingSummary.xml | 29307 | 2022-07-27 20:04:00 |
| Financial_Report.xlsx | 93906 | 2022-07-27 20:04:00 |
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| por-20220630.htm | 2059348 | 2022-07-27 20:04:00 |
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| por-20220630_cal.xml | 86936 | 2022-07-27 20:04:00 |
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| por-20220630_htm.xml | 1681650 | 2022-07-27 20:04:00 |
| por-20220630_lab.xml | 580913 | 2022-07-27 20:04:00 |
| por-20220630_pre.xml | 369118 | 2022-07-27 20:04:00 |
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| report.css | 2767 | 2022-07-27 20:04:00 |
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