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|---|---|---|
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| 0001206774-12-001258-index.html | 2012-03-29 17:12:19 | |
| 0001206774-12-001258.txt | 2012-03-29 17:12:19 | |
 0001206774-12-001258-xbrl.zip | 112031 | 2012-03-29 17:12:19 |
| exhibit14-1.htm | 10737 | 2012-03-29 17:12:19 |
| exhibit14-2.htm | 5904 | 2012-03-29 17:12:19 |
| exhibit21.htm | 1879 | 2012-03-29 17:12:19 |
| exhibit23-1.htm | 1488 | 2012-03-29 17:12:19 |
| exhibit31-1.htm | 8301 | 2012-03-29 17:12:19 |
| exhibit31-2.htm | 7147 | 2012-03-29 17:12:19 |
| exhibit32-1.htm | 2470 | 2012-03-29 17:12:19 |
| exhibit32-2.htm | 2496 | 2012-03-29 17:12:19 |
| FilingSummary.xml | 12398 | 2012-03-29 17:12:19 |
| Financial_Report.xls | 1265779 | 2012-03-29 17:12:19 |
| potomac_10k.htm | 1960379 | 2012-03-29 17:12:19 |
 potomac_10k2x4x1.jpg | 46551 | 2012-03-29 17:12:19 |
 potomac_10k4x2x1.jpg | 17681 | 2012-03-29 17:12:19 |
 potomac_10k9x7x1.jpg | 17396 | 2012-03-29 17:12:19 |
| ptbs-20111231.xml | 1483377 | 2012-03-29 17:12:19 |
| ptbs-20111231.xsd | 22064 | 2012-03-29 17:12:19 |
| ptbs-20111231_cal.xml | 33691 | 2012-03-29 17:12:19 |
| ptbs-20111231_def.xml | 93717 | 2012-03-29 17:12:19 |
| ptbs-20111231_lab.xml | 212067 | 2012-03-29 17:12:19 |
| ptbs-20111231_pre.xml | 125476 | 2012-03-29 17:12:19 |
| R1.htm | 37573 | 2012-03-29 17:12:19 |
| R10.htm | 22888 | 2012-03-29 17:12:19 |
| R11.htm | 530011 | 2012-03-29 17:12:19 |
| R12.htm | 13310 | 2012-03-29 17:12:19 |
| R13.htm | 8713 | 2012-03-29 17:12:19 |
| R14.htm | 10007 | 2012-03-29 17:12:19 |
| R15.htm | 180845 | 2012-03-29 17:12:19 |
| R16.htm | 22794 | 2012-03-29 17:12:19 |
| R17.htm | 35365 | 2012-03-29 17:12:19 |
| R18.htm | 41481 | 2012-03-29 17:12:19 |
| R19.htm | 15918 | 2012-03-29 17:12:19 |
| R2.htm | 121408 | 2012-03-29 17:12:19 |
| R20.htm | 6308 | 2012-03-29 17:12:19 |
| R21.htm | 12721 | 2012-03-29 17:12:19 |
| R22.htm | 112055 | 2012-03-29 17:12:19 |
| R23.htm | 41581 | 2012-03-29 17:12:19 |
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| R25.htm | 6285 | 2012-03-29 17:12:19 |
| R3.htm | 21602 | 2012-03-29 17:12:19 |
| R4.htm | 136539 | 2012-03-29 17:12:19 |
| R5.htm | 72913 | 2012-03-29 17:12:19 |
| R6.htm | 19105 | 2012-03-29 17:12:19 |
| R7.htm | 173997 | 2012-03-29 17:12:19 |
| R8.htm | 64685 | 2012-03-29 17:12:19 |
| R9.htm | 70093 | 2012-03-29 17:12:19 |
| report.css | 2721 | 2012-03-29 17:12:19 |
| Show.js | 6423 | 2012-03-29 17:12:19 |