Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-21-000147-index-headers.html | 2021-11-10 16:06:52 | |
| 0001085869-21-000147-index.html | 2021-11-10 16:06:52 | |
| 0001085869-21-000147.txt | 2021-11-10 16:06:52 | |
 0001085869-21-000147-xbrl.zip | 175417 | 2021-11-10 16:06:52 |
| FilingSummary.xml | 1859 | 2021-11-10 16:06:52 |
| Financial_Report.xlsx | 5707 | 2021-11-10 16:06:52 |
 image.jpg | 1964 | 2021-11-10 16:06:52 |
 image1.jpg | 2860 | 2021-11-10 16:06:52 |
 image2.jpg | 1964 | 2021-11-10 16:06:52 |
 image3.jpg | 3444 | 2021-11-10 16:06:52 |
 image4.jpg | 3643 | 2021-11-10 16:06:52 |
 image5.jpg | 3630 | 2021-11-10 16:06:52 |
| MetaLinks.json | 17604 | 2021-11-10 16:06:52 |
| prft-20211109.htm | 53877 | 2021-11-10 16:06:52 |
| prft-20211109.xsd | 1968 | 2021-11-10 16:06:52 |
| prft-20211109_htm.xml | 11012 | 2021-11-10 16:06:52 |
| prft-20211109_lab.xml | 25154 | 2021-11-10 16:06:52 |
| prft-20211109_pre.xml | 13311 | 2021-11-10 16:06:52 |
| prft-bondhedgeconfirmbiddi.htm | 246421 | 2021-11-10 16:06:52 |
| prft-exchangeagreement2021.htm | 114380 | 2021-11-10 16:06:52 |
| prft-indenture2021converti.htm | 915955 | 2021-11-10 16:06:52 |
| prft-warrantconfirmbidding.htm | 215588 | 2021-11-10 16:06:52 |
| R1.htm | 40138 | 2021-11-10 16:06:52 |
| report.css | 2767 | 2021-11-10 16:06:52 |
| Show.js | 1085 | 2021-11-10 16:06:52 |