Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-20-000052-index-headers.html | 2020-06-17 13:45:50 | |
| 0001085869-20-000052-index.html | 2020-06-17 13:45:50 | |
| 0001085869-20-000052.txt | 2020-06-17 13:45:50 | |
 0001085869-20-000052-xbrl.zip | 15916 | 2020-06-17 13:45:50 |
| FilingSummary.xml | 1790 | 2020-06-17 13:45:50 |
| Financial_Report.xlsx | 5827 | 2020-06-17 13:45:50 |
| MetaLinks.json | 18351 | 2020-06-17 13:45:50 |
| prfpslpressrelease.htm | 12227 | 2020-06-17 13:45:50 |
| prft-20200617.htm | 46154 | 2020-06-17 13:45:50 |
| prft-20200617.xsd | 2489 | 2020-06-17 13:45:50 |
| prft-20200617_cal.xml | 775 | 2020-06-17 13:45:50 |
| prft-20200617_def.xml | 1731 | 2020-06-17 13:45:50 |
| prft-20200617_htm.xml | 10945 | 2020-06-17 13:45:50 |
| prft-20200617_lab.xml | 25298 | 2020-06-17 13:45:50 |
| prft-20200617_pre.xml | 13255 | 2020-06-17 13:45:50 |
| R1.htm | 40170 | 2020-06-17 13:45:50 |
| report.css | 2766 | 2020-06-17 13:45:50 |
| Show.js | 1084 | 2020-06-17 13:45:50 |