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| 0001085869-17-000024-index.html | 2017-05-04 16:41:04 | |
| 0001085869-17-000024.txt | 2017-05-04 16:41:04 | |
 0001085869-17-000024-xbrl.zip | 123041 | 2017-05-04 16:41:04 |
| FilingSummary.xml | 30830 | 2017-05-04 16:41:04 |
| Financial_Report.xlsx | 55419 | 2017-05-04 16:41:04 |
| form10q.htm | 571011 | 2017-05-04 16:41:04 |
| prft-20170331.xml | 630557 | 2017-05-04 16:41:04 |
| prft-20170331.xsd | 41372 | 2017-05-04 16:41:04 |
| prft-20170331_cal.xml | 69715 | 2017-05-04 16:41:04 |
| prft-20170331_def.xml | 185770 | 2017-05-04 16:41:04 |
| prft-20170331_lab.xml | 610613 | 2017-05-04 16:41:04 |
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| prftq12017_exhibit311.htm | 8818 | 2017-05-04 16:41:04 |
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| prftq12017_exhibit321.htm | 7451 | 2017-05-04 16:41:04 |
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| report.css | 2767 | 2017-05-04 16:41:04 |
| Show.js | 1410 | 2017-05-04 16:41:04 |