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|---|---|---|
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| 0000722885-17-000174-index.html | 2017-08-17 16:22:04 | |
| 0000722885-17-000174.txt | 2017-08-17 16:22:04 | |
 0000722885-17-000174-xbrl.zip | 106309 | 2017-08-17 16:22:04 |
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| FilingSummary.xml | 9736 | 2017-08-17 16:22:04 |
| ptf-20170801.xml | 289809 | 2017-08-17 16:22:04 |
| ptf-20170801.xsd | 20042 | 2017-08-17 16:22:04 |
| ptf-20170801_cal.xml | 12689 | 2017-08-17 16:22:04 |
| ptf-20170801_def.xml | 655461 | 2017-08-17 16:22:04 |
| ptf-20170801_lab.xml | 163072 | 2017-08-17 16:22:04 |
| ptf-20170801_pre.xml | 685389 | 2017-08-17 16:22:04 |
| R1.htm | 54386 | 2017-08-17 16:22:04 |
| R10.htm | 107094 | 2017-08-17 16:22:04 |
| R11.htm | 204769 | 2017-08-17 16:22:04 |
| R12.htm | 102965 | 2017-08-17 16:22:04 |
| R13.htm | 203688 | 2017-08-17 16:22:04 |
| R18.htm | 16192 | 2017-08-17 16:22:04 |
| R2.htm | 108189 | 2017-08-17 16:22:04 |
| R3.htm | 209374 | 2017-08-17 16:22:04 |
| R4.htm | 106432 | 2017-08-17 16:22:04 |
| R5.htm | 206562 | 2017-08-17 16:22:04 |
| R6.htm | 110818 | 2017-08-17 16:22:04 |
| R7.htm | 209785 | 2017-08-17 16:22:04 |
| R8.htm | 91720 | 2017-08-17 16:22:04 |
| R9.htm | 187703 | 2017-08-17 16:22:04 |
| report.css | 2767 | 2017-08-17 16:22:04 |
| Show.js | 1410 | 2017-08-17 16:22:04 |
| xbrl.htm | 28741 | 2017-08-17 16:22:04 |