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| 0000077159-17-000010-index.html | 2017-05-10 16:03:09 | |
| 0000077159-17-000010.txt | 2017-05-10 16:03:09 | |
 0000077159-17-000010-xbrl.zip | 159575 | 2017-05-10 16:03:09 |
| FilingSummary.xml | 30974 | 2017-05-10 16:03:09 |
| Financial_Report.xlsx | 64581 | 2017-05-10 16:03:09 |
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| pva-20170331.xml | 953658 | 2017-05-10 16:03:09 |
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| pva-20170331_cal.xml | 71783 | 2017-05-10 16:03:09 |
| pva-20170331_def.xml | 255750 | 2017-05-10 16:03:09 |
| pva-20170331_lab.xml | 555420 | 2017-05-10 16:03:09 |
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| pva-2017331x10q.htm | 1218426 | 2017-05-10 16:03:09 |
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| report.css | 2767 | 2017-05-10 16:03:09 |
| Show.js | 1410 | 2017-05-10 16:03:09 |