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 0000009346-20-000067-index-headers.html | 2020-08-05 15:56:39 | |
| 0000009346-20-000067-index.html | 2020-08-05 15:56:39 | |
| 0000009346-20-000067.txt | 2020-08-05 15:56:39 | |
 0000009346-20-000067-xbrl.zip | 232363 | 2020-08-05 15:56:39 |
| exhibit101.htm | 13558 | 2020-08-05 15:56:39 |
| exhibit103.htm | 57593 | 2020-08-05 15:56:39 |
| exhibit311.htm | 13846 | 2020-08-05 15:56:39 |
| exhibit312.htm | 13832 | 2020-08-05 15:56:39 |
| exhibit32.htm | 6811 | 2020-08-05 15:56:39 |
| FilingSummary.xml | 27044 | 2020-08-05 15:56:39 |
| Financial_Report.xlsx | 75468 | 2020-08-05 15:56:39 |
| form10q.htm | 1776967 | 2020-08-05 15:56:39 |
| form10q_htm.xml | 1620278 | 2020-08-05 15:56:39 |
 image1.jpg | 8225 | 2020-08-05 15:56:39 |
| MetaLinks.json | 569833 | 2020-08-05 15:56:39 |
| ptvc-20200630.xsd | 41412 | 2020-08-05 15:56:39 |
| ptvc-20200630_cal.xml | 87488 | 2020-08-05 15:56:39 |
| ptvc-20200630_def.xml | 228838 | 2020-08-05 15:56:39 |
| ptvc-20200630_lab.xml | 661268 | 2020-08-05 15:56:39 |
| ptvc-20200630_pre.xml | 359927 | 2020-08-05 15:56:39 |
| R1.htm | 57455 | 2020-08-05 15:56:39 |
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| R9.htm | 191638 | 2020-08-05 15:56:39 |
| report.css | 2767 | 2020-08-05 15:56:39 |
| Show.js | 1085 | 2020-08-05 15:56:39 |