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|---|---|---|
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| 0000722885-17-000171-index.html | 2017-08-17 14:54:00 | |
| 0000722885-17-000171.txt | 2017-08-17 14:54:00 | |
 0000722885-17-000171-xbrl.zip | 104632 | 2017-08-17 14:54:00 |
 BarChart1.png | 29621 | 2017-08-17 14:54:00 |
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| coverltr.htm | 6553 | 2017-08-17 14:54:00 |
| FilingSummary.xml | 9736 | 2017-08-17 14:54:00 |
| ptf-20170801.xml | 272681 | 2017-08-17 14:54:00 |
| ptf-20170801.xsd | 19298 | 2017-08-17 14:54:00 |
| ptf-20170801_cal.xml | 12689 | 2017-08-17 14:54:00 |
| ptf-20170801_def.xml | 647613 | 2017-08-17 14:54:00 |
| ptf-20170801_lab.xml | 157980 | 2017-08-17 14:54:00 |
| ptf-20170801_pre.xml | 675668 | 2017-08-17 14:54:00 |
| R1.htm | 47284 | 2017-08-17 14:54:00 |
| R10.htm | 107065 | 2017-08-17 14:54:00 |
| R11.htm | 204741 | 2017-08-17 14:54:00 |
| R12.htm | 102924 | 2017-08-17 14:54:00 |
| R13.htm | 203648 | 2017-08-17 14:54:00 |
| R18.htm | 16188 | 2017-08-17 14:54:00 |
| R2.htm | 105677 | 2017-08-17 14:54:00 |
| R3.htm | 200921 | 2017-08-17 14:54:00 |
| R4.htm | 103968 | 2017-08-17 14:54:00 |
| R5.htm | 198521 | 2017-08-17 14:54:00 |
| R6.htm | 108313 | 2017-08-17 14:54:00 |
| R7.htm | 201304 | 2017-08-17 14:54:00 |
| R8.htm | 89210 | 2017-08-17 14:54:00 |
| R9.htm | 179217 | 2017-08-17 14:54:00 |
| report.css | 2767 | 2017-08-17 14:54:00 |
| Show.js | 1410 | 2017-08-17 14:54:00 |