Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-21-000112-index-headers.html | 2021-10-28 10:31:16 | |
| 0001085869-21-000112-index.html | 2021-10-28 10:31:16 | |
| 0001085869-21-000112.txt | 2021-10-28 10:31:16 | |
 0001085869-21-000112-xbrl.zip | 30444 | 2021-10-28 10:31:16 |
| FilingSummary.xml | 1751 | 2021-10-28 10:31:16 |
| Financial_Report.xlsx | 5706 | 2021-10-28 10:31:16 |
| MetaLinks.json | 17604 | 2021-10-28 10:31:16 |
| prfpressrelease_q32021.htm | 239436 | 2021-10-28 10:31:16 |
| prft-20211028.htm | 35949 | 2021-10-28 10:31:16 |
| prft-20211028.xsd | 1968 | 2021-10-28 10:31:16 |
| prft-20211028_htm.xml | 10959 | 2021-10-28 10:31:16 |
| prft-20211028_lab.xml | 25154 | 2021-10-28 10:31:16 |
| prft-20211028_pre.xml | 13311 | 2021-10-28 10:31:16 |
| q32021earningsdeck.htm | 8827 | 2021-10-28 10:31:16 |
 q32021earningsdeck001.jpg | 51174 | 2021-10-28 10:31:16 |
 q32021earningsdeck002.jpg | 150639 | 2021-10-28 10:31:16 |
 q32021earningsdeck003.jpg | 125077 | 2021-10-28 10:31:16 |
 q32021earningsdeck004.jpg | 145418 | 2021-10-28 10:31:16 |
 q32021earningsdeck005.jpg | 93886 | 2021-10-28 10:31:16 |
 q32021earningsdeck006.jpg | 94846 | 2021-10-28 10:31:16 |
| R1.htm | 40137 | 2021-10-28 10:31:16 |
| report.css | 2767 | 2021-10-28 10:31:16 |
| Show.js | 1085 | 2021-10-28 10:31:16 |