Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001085869-20-000089-index-headers.html | 2020-08-11 19:14:34 | |
| 0001085869-20-000089-index.html | 2020-08-11 19:14:34 | |
| 0001085869-20-000089.txt | 2020-08-11 19:14:34 | |
 0001085869-20-000089-xbrl.zip | 17691 | 2020-08-11 19:14:34 |
| FilingSummary.xml | 1719 | 2020-08-11 19:14:34 |
| Financial_Report.xlsx | 5461 | 2020-08-11 19:14:34 |
| MetaLinks.json | 17705 | 2020-08-11 19:14:34 |
| prfpressreleasepricing.htm | 25008 | 2020-08-11 19:14:34 |
| prft-20200811.htm | 39399 | 2020-08-11 19:14:34 |
| prft-20200811.xsd | 2417 | 2020-08-11 19:14:34 |
| prft-20200811_cal.xml | 706 | 2020-08-11 19:14:34 |
| prft-20200811_def.xml | 1639 | 2020-08-11 19:14:34 |
| prft-20200811_htm.xml | 11140 | 2020-08-11 19:14:34 |
| prft-20200811_lab.xml | 24993 | 2020-08-11 19:14:34 |
| prft-20200811_pre.xml | 13186 | 2020-08-11 19:14:34 |
| R1.htm | 40150 | 2020-08-11 19:14:34 |
| report.css | 2767 | 2020-08-11 19:14:34 |
| Show.js | 1085 | 2020-08-11 19:14:34 |