Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-21-000084-index-headers.html | 2021-07-29 09:37:07 | |
| 0001085869-21-000084-index.html | 2021-07-29 09:37:07 | |
| 0001085869-21-000084.txt | 2021-07-29 09:37:07 | |
 0001085869-21-000084-xbrl.zip | 29844 | 2021-07-29 09:37:07 |
| FilingSummary.xml | 1757 | 2021-07-29 09:37:07 |
| Financial_Report.xlsx | 5707 | 2021-07-29 09:37:07 |
| MetaLinks.json | 17769 | 2021-07-29 09:37:07 |
| prfpressrelease_q22021.htm | 238812 | 2021-07-29 09:37:07 |
| prft-20210729.htm | 36030 | 2021-07-29 09:37:07 |
| prft-20210729.xsd | 1968 | 2021-07-29 09:37:07 |
| prft-20210729_htm.xml | 10959 | 2021-07-29 09:37:07 |
| prft-20210729_lab.xml | 25154 | 2021-07-29 09:37:07 |
| prft-20210729_pre.xml | 13311 | 2021-07-29 09:37:07 |
| q22021earningsdeck-63021.htm | 8522 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021001.jpg | 50701 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021002.jpg | 143944 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021003.jpg | 112087 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021004.jpg | 135072 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021005.jpg | 105463 | 2021-07-29 09:37:07 |
 q22021earningsdeck-63021006.jpg | 93848 | 2021-07-29 09:37:07 |
| R1.htm | 40137 | 2021-07-29 09:37:07 |
| report.css | 2767 | 2021-07-29 09:37:07 |
| Show.js | 1085 | 2021-07-29 09:37:07 |