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| 0001085869-16-000067-index.html | 2016-05-05 16:30:56 | |
| 0001085869-16-000067.txt | 2016-05-05 16:30:56 | |
 0001085869-16-000067-xbrl.zip | 118369 | 2016-05-05 16:30:56 |
| FilingSummary.xml | 31871 | 2016-05-05 16:30:56 |
| Financial_Report.xlsx | 54815 | 2016-05-05 16:30:56 |
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| prft-20160331.xml | 608186 | 2016-05-05 16:30:56 |
| prft-20160331.xsd | 40617 | 2016-05-05 16:30:56 |
| prft-20160331_cal.xml | 66351 | 2016-05-05 16:30:56 |
| prft-20160331_def.xml | 189995 | 2016-05-05 16:30:56 |
| prft-20160331_lab.xml | 574145 | 2016-05-05 16:30:56 |
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| prftq12016_exhibit311.htm | 8785 | 2016-05-05 16:30:56 |
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| report.css | 2767 | 2016-05-05 16:30:56 |
| Show.js | 1410 | 2016-05-05 16:30:56 |