Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-22-000107-index-headers.html | 2022-08-04 13:03:36 | |
| 0001085869-22-000107-index.html | 2022-08-04 13:03:36 | |
| 0001085869-22-000107.txt | 2022-08-04 13:03:36 | |
 0001085869-22-000107-xbrl.zip | 282348 | 2022-08-04 13:03:36 |
| FilingSummary.xml | 40184 | 2022-08-04 13:03:36 |
| Financial_Report.xlsx | 126461 | 2022-08-04 13:03:36 |
| MetaLinks.json | 712113 | 2022-08-04 13:03:36 |
| prft-20220630.htm | 1585494 | 2022-08-04 13:03:36 |
| prft-20220630.xsd | 50609 | 2022-08-04 13:03:36 |
| prft-20220630_cal.xml | 79440 | 2022-08-04 13:03:36 |
| prft-20220630_def.xml | 262314 | 2022-08-04 13:03:36 |
| prft-20220630_htm.xml | 1688716 | 2022-08-04 13:03:36 |
| prft-20220630_lab.xml | 655141 | 2022-08-04 13:03:36 |
| prft-20220630_pre.xml | 456949 | 2022-08-04 13:03:36 |
| prftq22022_exhibit311.htm | 9857 | 2022-08-04 13:03:36 |
| prftq22022_exhibit312.htm | 9763 | 2022-08-04 13:03:36 |
| prftq22022_exhibit321.htm | 9723 | 2022-08-04 13:03:36 |
| R1.htm | 53719 | 2022-08-04 13:03:36 |
| R10.htm | 19891 | 2022-08-04 13:03:36 |
| R11.htm | 97388 | 2022-08-04 13:03:36 |
| R12.htm | 17003 | 2022-08-04 13:03:36 |
| R13.htm | 51417 | 2022-08-04 13:03:36 |
| R14.htm | 56268 | 2022-08-04 13:03:36 |
| R15.htm | 13123 | 2022-08-04 13:03:36 |
| R16.htm | 44329 | 2022-08-04 13:03:36 |
| R17.htm | 44339 | 2022-08-04 13:03:36 |
| R18.htm | 93807 | 2022-08-04 13:03:36 |
| R19.htm | 8770 | 2022-08-04 13:03:36 |
| R2.htm | 100204 | 2022-08-04 13:03:36 |
| R20.htm | 12360 | 2022-08-04 13:03:36 |
| R21.htm | 14039 | 2022-08-04 13:03:36 |
| R22.htm | 18130 | 2022-08-04 13:03:36 |
| R23.htm | 5843 | 2022-08-04 13:03:36 |
| R24.htm | 151067 | 2022-08-04 13:03:36 |
| R25.htm | 82156 | 2022-08-04 13:03:36 |
| R26.htm | 12314 | 2022-08-04 13:03:36 |
| R27.htm | 51944 | 2022-08-04 13:03:36 |
| R28.htm | 54604 | 2022-08-04 13:03:36 |
| R29.htm | 12032 | 2022-08-04 13:03:36 |
| R3.htm | 21915 | 2022-08-04 13:03:36 |
| R30.htm | 43519 | 2022-08-04 13:03:36 |
| R31.htm | 50235 | 2022-08-04 13:03:36 |
| R32.htm | 50003 | 2022-08-04 13:03:36 |
| R33.htm | 10051 | 2022-08-04 13:03:36 |
| R34.htm | 18865 | 2022-08-04 13:03:36 |
| R35.htm | 19802 | 2022-08-04 13:03:36 |
| R36.htm | 8431 | 2022-08-04 13:03:36 |
| R37.htm | 4959 | 2022-08-04 13:03:36 |
| R38.htm | 52286 | 2022-08-04 13:03:36 |
| R39.htm | 12752 | 2022-08-04 13:03:36 |
| R4.htm | 71362 | 2022-08-04 13:03:36 |
| R40.htm | 22334 | 2022-08-04 13:03:36 |
| R41.htm | 26302 | 2022-08-04 13:03:36 |
| R42.htm | 56608 | 2022-08-04 13:03:36 |
| R43.htm | 10786 | 2022-08-04 13:03:36 |
| R44.htm | 7206 | 2022-08-04 13:03:36 |
| R45.htm | 9206 | 2022-08-04 13:03:36 |
| R46.htm | 11991 | 2022-08-04 13:03:36 |
| R47.htm | 24604 | 2022-08-04 13:03:36 |
| R48.htm | 15339 | 2022-08-04 13:03:36 |
| R49.htm | 21205 | 2022-08-04 13:03:36 |
| R5.htm | 22747 | 2022-08-04 13:03:36 |
| R50.htm | 14647 | 2022-08-04 13:03:36 |
| R51.htm | 12216 | 2022-08-04 13:03:36 |
| R52.htm | 67592 | 2022-08-04 13:03:36 |
| R53.htm | 8339 | 2022-08-04 13:03:36 |
| R54.htm | 15159 | 2022-08-04 13:03:36 |
| R55.htm | 11012 | 2022-08-04 13:03:36 |
| R56.htm | 23103 | 2022-08-04 13:03:36 |
| R57.htm | 17970 | 2022-08-04 13:03:36 |
| R58.htm | 14915 | 2022-08-04 13:03:36 |
| R59.htm | 47622 | 2022-08-04 13:03:36 |
| R6.htm | 68826 | 2022-08-04 13:03:36 |
| R60.htm | 208269 | 2022-08-04 13:03:36 |
| R61.htm | 23320 | 2022-08-04 13:03:36 |
| R62.htm | 20775 | 2022-08-04 13:03:36 |
| R63.htm | 52399 | 2022-08-04 13:03:36 |
| R64.htm | 16926 | 2022-08-04 13:03:36 |
| R65.htm | 10903 | 2022-08-04 13:03:36 |
| R66.htm | 17292 | 2022-08-04 13:03:36 |
| R67.htm | 10963 | 2022-08-04 13:03:36 |
| R68.htm | 8138 | 2022-08-04 13:03:36 |
| R69.htm | 21042 | 2022-08-04 13:03:36 |
| R7.htm | 85065 | 2022-08-04 13:03:36 |
| R8.htm | 7559 | 2022-08-04 13:03:36 |
| R9.htm | 6430 | 2022-08-04 13:03:36 |
| report.css | 2767 | 2022-08-04 13:03:36 |
| Show.js | 1085 | 2022-08-04 13:03:36 |