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|---|---|---|
 0000784977-11-000009-index-headers.html | 2011-02-24 20:22:01 | |
| 0000784977-11-000009-index.html | 2011-02-24 20:22:01 | |
| 0000784977-11-000009.txt | 2011-02-24 20:22:01 | |
 0000784977-11-000009-xbrl.zip | 169614 | 2011-02-24 20:22:01 |
| defnref.xml | 38574 | 2011-02-24 20:22:01 |
| ex121.htm | 47527 | 2011-02-24 20:22:01 |
| ex231.htm | 2811 | 2011-02-24 20:22:01 |
| ex311.htm | 13325 | 2011-02-24 20:22:01 |
| ex312.htm | 12969 | 2011-02-24 20:22:01 |
| ex321.htm | 8186 | 2011-02-24 20:22:01 |
| FilingSummary.xml | 21015 | 2011-02-24 20:22:01 |
| Financial_Report.xls | 1555450 | 2011-02-24 20:22:01 |
| 1274341 | 2011-02-24 20:22:01 | |
 item2map.jpg | 57566 | 2011-02-24 20:22:01 |
| por-20101231.xml | 1810929 | 2011-02-24 20:22:01 |
| por-20101231.xsd | 25580 | 2011-02-24 20:22:01 |
| por-20101231_cal.xml | 72348 | 2011-02-24 20:22:01 |
| por-20101231_def.xml | 153560 | 2011-02-24 20:22:01 |
| por-20101231_lab.xml | 350902 | 2011-02-24 20:22:01 |
| por-20101231_pre.xml | 185594 | 2011-02-24 20:22:01 |
| por2010123110k.htm | 3402060 | 2011-02-24 20:22:01 |
| R1.xml | 52899 | 2011-02-24 20:22:01 |
| R10.xml | 17054 | 2011-02-24 20:22:01 |
| R11.xml | 61035 | 2011-02-24 20:22:01 |
| R12.xml | 78913 | 2011-02-24 20:22:01 |
| R13.xml | 210148 | 2011-02-24 20:22:01 |
| R14.xml | 142407 | 2011-02-24 20:22:01 |
| R15.xml | 114528 | 2011-02-24 20:22:01 |
| R16.xml | 48053 | 2011-02-24 20:22:01 |
| R17.xml | 29765 | 2011-02-24 20:22:01 |
| R18.xml | 52597 | 2011-02-24 20:22:01 |
| R19.xml | 641956 | 2011-02-24 20:22:01 |
| R2.xml | 87748 | 2011-02-24 20:22:01 |
| R20.xml | 103319 | 2011-02-24 20:22:01 |
| R21.xml | 9654 | 2011-02-24 20:22:01 |
| R22.xml | 41924 | 2011-02-24 20:22:01 |
| R23.xml | 32628 | 2011-02-24 20:22:01 |
| R24.xml | 125155 | 2011-02-24 20:22:01 |
| R25.xml | 24218 | 2011-02-24 20:22:01 |
| R26.xml | 34479 | 2011-02-24 20:22:01 |
| R27.xml | 41881 | 2011-02-24 20:22:01 |
| R3.xml | 146701 | 2011-02-24 20:22:01 |
| R4.xml | 26427 | 2011-02-24 20:22:01 |
| R5.xml | 198462 | 2011-02-24 20:22:01 |
| R6.xml | 4998 | 2011-02-24 20:22:01 |
| R7.xml | 48566 | 2011-02-24 20:22:01 |
| R8.xml | 19434 | 2011-02-24 20:22:01 |
| R9.xml | 186854 | 2011-02-24 20:22:01 |