Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001085869-11-000037-index.html | 2011-08-04 13:20:38 | |
| 0001085869-11-000037.txt | 2011-08-04 13:20:38 | |
 0001085869-11-000037-xbrl.zip | 52855 | 2011-08-04 13:20:38 |
| FilingSummary.xml | 10601 | 2011-08-04 13:20:38 |
| Financial_Report.xls | 629370 | 2011-08-04 13:20:38 |
| form10qa.htm | 47718 | 2011-08-04 13:20:38 |
| prft-20110630.xml | 683813 | 2011-08-04 13:20:38 |
| prft-20110630.xsd | 12664 | 2011-08-04 13:20:38 |
| prft-20110630_cal.xml | 39404 | 2011-08-04 13:20:38 |
| prft-20110630_def.xml | 13505 | 2011-08-04 13:20:38 |
| prft-20110630_lab.xml | 133387 | 2011-08-04 13:20:38 |
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| R1.htm | 25322 | 2011-08-04 13:20:38 |
| R10.htm | 116771 | 2011-08-04 13:20:38 |
| R11.htm | 8526 | 2011-08-04 13:20:38 |
| R12.htm | 25070 | 2011-08-04 13:20:38 |
| R13.htm | 135552 | 2011-08-04 13:20:38 |
| R14.htm | 105610 | 2011-08-04 13:20:38 |
| R15.htm | 108107 | 2011-08-04 13:20:38 |
| R16.htm | 11360 | 2011-08-04 13:20:38 |
| R17.htm | 13553 | 2011-08-04 13:20:38 |
| R18.htm | 7021 | 2011-08-04 13:20:38 |
| R19.htm | 15117 | 2011-08-04 13:20:38 |
| R2.htm | 98187 | 2011-08-04 13:20:38 |
| R3.htm | 18713 | 2011-08-04 13:20:38 |
| R4.htm | 91643 | 2011-08-04 13:20:38 |
| R5.htm | 72636 | 2011-08-04 13:20:38 |
| R6.htm | 123670 | 2011-08-04 13:20:38 |
| R7.htm | 12460 | 2011-08-04 13:20:38 |
| R8.htm | 32989 | 2011-08-04 13:20:38 |
| R9.htm | 71012 | 2011-08-04 13:20:38 |
| report.css | 2721 | 2011-08-04 13:20:38 |
| Show.js | 6423 | 2011-08-04 13:20:38 |