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| 0000928816-16-004071-index.html | 2016-12-16 09:12:39 | |
| 0000928816-16-004071.txt | 2016-12-16 09:12:39 | |
 0000928816-16-004071-xbrl.zip | 66288 | 2016-12-16 09:12:39 |
| a_rrcvr.htm | 34223 | 2016-12-16 09:12:39 |
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| FilingSummary.xml | 7519 | 2016-12-16 09:12:39 |
| prrf-20151130.xml | 766286 | 2016-12-16 09:12:39 |
| prrf-20151130.xsd | 22000 | 2016-12-16 09:12:39 |
| prrf-20151130_def.xml | 223321 | 2016-12-16 09:12:39 |
| prrf-20151130_lab.xml | 207939 | 2016-12-16 09:12:39 |
| prrf-20151130_pre.xml | 462927 | 2016-12-16 09:12:39 |
| R1.htm | 105539 | 2016-12-16 09:12:39 |
| R10.htm | 133442 | 2016-12-16 09:12:39 |
| R11.htm | 372448 | 2016-12-16 09:12:39 |
| R18.htm | 1379887 | 2016-12-16 09:12:39 |
| R2.htm | 138898 | 2016-12-16 09:12:39 |
| R3.htm | 149938 | 2016-12-16 09:12:39 |
| R4.htm | 128186 | 2016-12-16 09:12:39 |
| R5.htm | 149938 | 2016-12-16 09:12:39 |
| R6.htm | 149934 | 2016-12-16 09:12:39 |
| R7.htm | 149932 | 2016-12-16 09:12:39 |
| R8.htm | 149934 | 2016-12-16 09:12:39 |
| R9.htm | 149932 | 2016-12-16 09:12:39 |
| report.css | 2767 | 2016-12-16 09:12:39 |
| Show.js | 1410 | 2016-12-16 09:12:39 |