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|---|---|---|
 0000009346-19-000081-index-headers.html | 2019-08-07 16:57:28 | |
| 0000009346-19-000081-index.html | 2019-08-07 16:57:28 | |
| 0000009346-19-000081.txt | 2019-08-07 16:57:28 | |
 0000009346-19-000081-xbrl.zip | 188028 | 2019-08-07 16:57:28 |
| exh32.htm | 93466 | 2019-08-07 16:57:28 |
| exhibit311.htm | 12849 | 2019-08-07 16:57:28 |
| exhibit312.htm | 12810 | 2019-08-07 16:57:28 |
| exhibit32.htm | 5792 | 2019-08-07 16:57:28 |
| FilingSummary.xml | 27073 | 2019-08-07 16:57:28 |
| Financial_Report.xlsx | 65819 | 2019-08-07 16:57:28 |
| form10q.htm | 1272644 | 2019-08-07 16:57:28 |
 image1.jpg | 8225 | 2019-08-07 16:57:28 |
| ptvc-20190630.xml | 1594938 | 2019-08-07 16:57:28 |
| ptvc-20190630.xsd | 43435 | 2019-08-07 16:57:28 |
| ptvc-20190630_cal.xml | 88560 | 2019-08-07 16:57:28 |
| ptvc-20190630_def.xml | 233129 | 2019-08-07 16:57:28 |
| ptvc-20190630_lab.xml | 665453 | 2019-08-07 16:57:28 |
| ptvc-20190630_pre.xml | 361726 | 2019-08-07 16:57:28 |
| R1.htm | 35141 | 2019-08-07 16:57:28 |
| R10.htm | 17786 | 2019-08-07 16:57:28 |
| R11.htm | 31430 | 2019-08-07 16:57:28 |
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| R22.htm | 163565 | 2019-08-07 16:57:28 |
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| R29.htm | 30728 | 2019-08-07 16:57:28 |
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| R32.htm | 23553 | 2019-08-07 16:57:28 |
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| R7.htm | 52323 | 2019-08-07 16:57:28 |
| R8.htm | 22638 | 2019-08-07 16:57:28 |
| R9.htm | 158395 | 2019-08-07 16:57:28 |
| report.css | 2767 | 2019-08-07 16:57:28 |
| Show.js | 1085 | 2019-08-07 16:57:28 |