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| 0000077159-19-000057-index.html | 2019-11-08 11:54:24 | |
| 0000077159-19-000057.txt | 2019-11-08 11:54:24 | |
 0000077159-19-000057-xbrl.zip | 483887 | 2019-11-08 11:54:24 |
| FilingSummary.xml | 31957 | 2019-11-08 11:54:24 |
| Financial_Report.xlsx | 69204 | 2019-11-08 11:54:24 |
| MetaLinks.json | 529633 | 2019-11-08 11:54:24 |
| pva-20190930.xsd | 50832 | 2019-11-08 11:54:24 |
| pva-20190930xex311.htm | 10530 | 2019-11-08 11:54:24 |
| pva-20190930xex312.htm | 10421 | 2019-11-08 11:54:24 |
| pva-20190930xex321.htm | 6090 | 2019-11-08 11:54:24 |
| pva-20190930xex322.htm | 6145 | 2019-11-08 11:54:24 |
| pva-20190930_cal.xml | 71494 | 2019-11-08 11:54:24 |
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| pva-20190930_lab.xml | 636589 | 2019-11-08 11:54:24 |
| pva-20190930_pre.xml | 355177 | 2019-11-08 11:54:24 |
| pva-2019930x10q.htm | 2142694 | 2019-11-08 11:54:24 |
| pva-2019930x10q_htm.xml | 1455749 | 2019-11-08 11:54:24 |
 pvac2019logoa03.jpg | 264438 | 2019-11-08 11:54:24 |
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| report.css | 2767 | 2019-11-08 11:54:24 |
| Show.js | 1085 | 2019-11-08 11:54:24 |