Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-20-000073-index-headers.html | 2020-07-30 18:56:50 | |
| 0001085869-20-000073-index.html | 2020-07-30 18:56:50 | |
| 0001085869-20-000073.txt | 2020-07-30 18:56:50 | |
 0001085869-20-000073-xbrl.zip | 34361 | 2020-07-30 18:56:50 |
| FilingSummary.xml | 1883 | 2020-07-30 18:56:50 |
| Financial_Report.xlsx | 5486 | 2020-07-30 18:56:50 |
| MetaLinks.json | 18351 | 2020-07-30 18:56:50 |
| prfpressreleasebodchan.htm | 12407 | 2020-07-30 18:56:50 |
| prfpressreleaseq22020.htm | 329822 | 2020-07-30 18:56:50 |
| prft-20200728.htm | 47217 | 2020-07-30 18:56:50 |
| prft-20200728.xsd | 2489 | 2020-07-30 18:56:50 |
| prft-20200728_cal.xml | 775 | 2020-07-30 18:56:50 |
| prft-20200728_def.xml | 1731 | 2020-07-30 18:56:50 |
| prft-20200728_htm.xml | 10959 | 2020-07-30 18:56:50 |
| prft-20200728_lab.xml | 25298 | 2020-07-30 18:56:50 |
| prft-20200728_pre.xml | 13461 | 2020-07-30 18:56:50 |
| prftearningspresentation.htm | 9209 | 2020-07-30 18:56:50 |
 prftearningspresentation001.jpg | 57602 | 2020-07-30 18:56:50 |
 prftearningspresentation002.jpg | 125929 | 2020-07-30 18:56:50 |
 prftearningspresentation003.jpg | 119585 | 2020-07-30 18:56:50 |
 prftearningspresentation004.jpg | 111291 | 2020-07-30 18:56:50 |
| R1.htm | 40176 | 2020-07-30 18:56:50 |
| report.css | 2767 | 2020-07-30 18:56:50 |
| Show.js | 1085 | 2020-07-30 18:56:50 |