Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-22-000092-index-headers.html | 2022-05-25 14:02:22 | |
| 0001085869-22-000092-index.html | 2022-05-25 14:02:22 | |
| 0001085869-22-000092.txt | 2022-05-25 14:02:22 | |
 0001085869-22-000092-xbrl.zip | 11230 | 2022-05-25 14:02:22 |
| FilingSummary.xml | 1680 | 2022-05-25 14:02:22 |
| Financial_Report.xlsx | 5705 | 2022-05-25 14:02:22 |
| MetaLinks.json | 17656 | 2022-05-25 14:02:22 |
| prft-20220525.htm | 48912 | 2022-05-25 14:02:22 |
| prft-20220525.xsd | 1974 | 2022-05-25 14:02:22 |
| prft-20220525_htm.xml | 11389 | 2022-05-25 14:02:22 |
| prft-20220525_lab.xml | 25250 | 2022-05-25 14:02:22 |
| prft-20220525_pre.xml | 13411 | 2022-05-25 14:02:22 |
| R1.htm | 40264 | 2022-05-25 14:02:22 |
| report.css | 2766 | 2022-05-25 14:02:22 |
| Show.js | 1084 | 2022-05-25 14:02:22 |