Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000722885-17-000104-index-headers.html | 2017-06-05 12:20:50 | |
| 0000722885-17-000104-index.html | 2017-06-05 12:20:50 | |
| 0000722885-17-000104.txt | 2017-06-05 12:20:50 | |
 0000722885-17-000104-xbrl.zip | 64366 | 2017-06-05 12:20:50 |
 BarChart1.png | 31186 | 2017-06-05 12:20:50 |
 BarChart2.png | 30050 | 2017-06-05 12:20:50 |
 BarChart3.png | 13389 | 2017-06-05 12:20:50 |
| coverltr.htm | 4461 | 2017-06-05 12:20:50 |
| FilingSummary.xml | 5930 | 2017-06-05 12:20:50 |
| ptf-20170601.xml | 133544 | 2017-06-05 12:20:50 |
| ptf-20170601.xsd | 12262 | 2017-06-05 12:20:50 |
| ptf-20170601_cal.xml | 10112 | 2017-06-05 12:20:50 |
| ptf-20170601_def.xml | 344437 | 2017-06-05 12:20:50 |
| ptf-20170601_lab.xml | 141370 | 2017-06-05 12:20:50 |
| ptf-20170601_pre.xml | 371630 | 2017-06-05 12:20:50 |
| R1.htm | 30283 | 2017-06-05 12:20:50 |
| R12.htm | 16188 | 2017-06-05 12:20:50 |
| R2.htm | 108302 | 2017-06-05 12:20:50 |
| R3.htm | 201311 | 2017-06-05 12:20:50 |
| R4.htm | 104767 | 2017-06-05 12:20:50 |
| R5.htm | 199408 | 2017-06-05 12:20:50 |
| R6.htm | 88648 | 2017-06-05 12:20:50 |
| R7.htm | 178778 | 2017-06-05 12:20:50 |
| report.css | 2767 | 2017-06-05 12:20:50 |
| Show.js | 1410 | 2017-06-05 12:20:50 |