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|---|---|---|
 0000009346-21-000037-index-headers.html | 2021-05-06 16:41:03 | |
| 0000009346-21-000037-index.html | 2021-05-06 16:41:03 | |
| 0000009346-21-000037.txt | 2021-05-06 16:41:03 | |
 0000009346-21-000037-xbrl.zip | 205806 | 2021-05-06 16:41:03 |
| exhibit311.htm | 13246 | 2021-05-06 16:41:03 |
| exhibit312.htm | 13207 | 2021-05-06 16:41:03 |
| exhibit32.htm | 6510 | 2021-05-06 16:41:03 |
| FilingSummary.xml | 26980 | 2021-05-06 16:41:03 |
| Financial_Report.xlsx | 73739 | 2021-05-06 16:41:03 |
| form10q.htm | 1332709 | 2021-05-06 16:41:03 |
| form10q_htm.xml | 1384154 | 2021-05-06 16:41:03 |
 image0.jpg | 8225 | 2021-05-06 16:41:03 |
| MetaLinks.json | 582651 | 2021-05-06 16:41:03 |
| ptvc-20210331.xsd | 42355 | 2021-05-06 16:41:03 |
| ptvc-20210331_cal.xml | 84899 | 2021-05-06 16:41:03 |
| ptvc-20210331_def.xml | 243146 | 2021-05-06 16:41:03 |
| ptvc-20210331_lab.xml | 684405 | 2021-05-06 16:41:03 |
| ptvc-20210331_pre.xml | 375334 | 2021-05-06 16:41:03 |
| R1.htm | 57438 | 2021-05-06 16:41:03 |
| R10.htm | 11158 | 2021-05-06 16:41:03 |
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| R27.htm | 17111 | 2021-05-06 16:41:03 |
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| R7.htm | 52864 | 2021-05-06 16:41:03 |
| R8.htm | 31220 | 2021-05-06 16:41:03 |
| R9.htm | 168638 | 2021-05-06 16:41:03 |
| report.css | 2767 | 2021-05-06 16:41:03 |
| Show.js | 1085 | 2021-05-06 16:41:03 |