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| 0000077159-17-000014-index.html | 2017-08-09 11:06:22 | |
| 0000077159-17-000014.txt | 2017-08-09 11:06:22 | |
 0000077159-17-000014-xbrl.zip | 174540 | 2017-08-09 11:06:22 |
| FilingSummary.xml | 32151 | 2017-08-09 11:06:22 |
| Financial_Report.xlsx | 70348 | 2017-08-09 11:06:22 |
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| pva-20170630.xml | 1100852 | 2017-08-09 11:06:22 |
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| pva-20170630_cal.xml | 74081 | 2017-08-09 11:06:22 |
| pva-20170630_def.xml | 275095 | 2017-08-09 11:06:22 |
| pva-20170630_lab.xml | 591360 | 2017-08-09 11:06:22 |
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| pva-2017630x10q.htm | 1966190 | 2017-08-09 11:06:22 |
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| report.css | 2767 | 2017-08-09 11:06:22 |
| Show.js | 1410 | 2017-08-09 11:06:22 |