Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000784977-11-000074-index-headers.html | 2011-11-02 20:53:31 | |
| 0000784977-11-000074-index.html | 2011-11-02 20:53:31 | |
| 0000784977-11-000074.txt | 2011-11-02 20:53:31 | |
 0000784977-11-000074-xbrl.zip | 197777 | 2011-11-02 20:53:31 |
| ex31120110930.htm | 15127 | 2011-11-02 20:53:31 |
| ex31220110930.htm | 15266 | 2011-11-02 20:53:31 |
| ex3220110930.htm | 13427 | 2011-11-02 20:53:31 |
| FilingSummary.xml | 26694 | 2011-11-02 20:53:31 |
| Financial_Report.xls | 1478601 | 2011-11-02 20:53:31 |
| por-20110930.xml | 1728791 | 2011-11-02 20:53:31 |
| por-20110930.xsd | 57838 | 2011-11-02 20:53:31 |
| por-20110930_cal.xml | 109027 | 2011-11-02 20:53:31 |
| por-20110930_def.xml | 255133 | 2011-11-02 20:53:31 |
| por-20110930_lab.xml | 594069 | 2011-11-02 20:53:31 |
| por-20110930_pre.xml | 316684 | 2011-11-02 20:53:31 |
| por2011093010q.htm | 1636251 | 2011-11-02 20:53:31 |
| R1.htm | 19629 | 2011-11-02 20:53:31 |
| R10.htm | 40978 | 2011-11-02 20:53:31 |
| R11.htm | 99734 | 2011-11-02 20:53:31 |
| R12.htm | 34225 | 2011-11-02 20:53:31 |
| R13.htm | 33785 | 2011-11-02 20:53:31 |
| R14.htm | 7699 | 2011-11-02 20:53:31 |
| R15.htm | 13938 | 2011-11-02 20:53:31 |
| R16.htm | 12671 | 2011-11-02 20:53:31 |
| R17.htm | 8815 | 2011-11-02 20:53:31 |
| R18.htm | 7430 | 2011-11-02 20:53:31 |
| R19.htm | 11260 | 2011-11-02 20:53:31 |
| R2.htm | 79004 | 2011-11-02 20:53:31 |
| R20.htm | 6761 | 2011-11-02 20:53:31 |
| R21.htm | 16507 | 2011-11-02 20:53:31 |
| R22.htm | 6718 | 2011-11-02 20:53:31 |
| R23.htm | 7749 | 2011-11-02 20:53:31 |
| R24.htm | 187722 | 2011-11-02 20:53:31 |
| R25.htm | 174513 | 2011-11-02 20:53:31 |
| R26.htm | 132889 | 2011-11-02 20:53:31 |
| R27.htm | 37135 | 2011-11-02 20:53:31 |
| R28.htm | 90088 | 2011-11-02 20:53:31 |
| R29.htm | 28629 | 2011-11-02 20:53:31 |
| R3.htm | 144881 | 2011-11-02 20:53:31 |
| R30.htm | 18713 | 2011-11-02 20:53:31 |
| R31.htm | 3311 | 2011-11-02 20:53:31 |
| R32.htm | 38307 | 2011-11-02 20:53:31 |
| R33.htm | 10052 | 2011-11-02 20:53:31 |
| R34.htm | 11427 | 2011-11-02 20:53:31 |
| R35.htm | 38296 | 2011-11-02 20:53:31 |
| R36.htm | 16792 | 2011-11-02 20:53:31 |
| R37.htm | 32226 | 2011-11-02 20:53:31 |
| R38.htm | 60202 | 2011-11-02 20:53:31 |
| R39.htm | 13466 | 2011-11-02 20:53:31 |
| R4.htm | 22983 | 2011-11-02 20:53:31 |
| R40.htm | 11886 | 2011-11-02 20:53:31 |
| R41.htm | 2425 | 2011-11-02 20:53:31 |
| R42.htm | 7038 | 2011-11-02 20:53:31 |
| R43.htm | 33497 | 2011-11-02 20:53:31 |
| R44.htm | 9130 | 2011-11-02 20:53:31 |
| R45.htm | 8699 | 2011-11-02 20:53:31 |
| R46.htm | 9308 | 2011-11-02 20:53:31 |
| R47.htm | 17963 | 2011-11-02 20:53:31 |
| R48.htm | 35571 | 2011-11-02 20:53:31 |
| R49.htm | 67042 | 2011-11-02 20:53:31 |
| R5.htm | 132935 | 2011-11-02 20:53:31 |
| R50.htm | 24559 | 2011-11-02 20:53:31 |
| R51.htm | 12043 | 2011-11-02 20:53:31 |
| R52.htm | 5545 | 2011-11-02 20:53:31 |
| R6.htm | 21961 | 2011-11-02 20:53:31 |
| R7.htm | 186907 | 2011-11-02 20:53:31 |
| R8.htm | 189076 | 2011-11-02 20:53:31 |
| R9.htm | 136458 | 2011-11-02 20:53:31 |
| report.css | 2721 | 2011-11-02 20:53:31 |
| Show.js | 6423 | 2011-11-02 20:53:31 |