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| 0001193125-12-222108-index.html | 2012-05-09 16:21:03 | |
| 0001193125-12-222108.txt | 2012-05-09 16:21:03 | |
 0001193125-12-222108-xbrl.zip | 45777 | 2012-05-09 16:21:03 |
| d337560d10q.htm | 570726 | 2012-05-09 16:21:03 |
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| d337560dex102.htm | 120446 | 2012-05-09 16:21:03 |
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| d337560dex312.htm | 6373 | 2012-05-09 16:21:03 |
| d337560dex321.htm | 3062 | 2012-05-09 16:21:03 |
| d337560dex322.htm | 3249 | 2012-05-09 16:21:03 |
| FilingSummary.xml | 8412 | 2012-05-09 16:21:03 |
| Financial_Report.xls | 401224 | 2012-05-09 16:21:03 |
 g337560g02v82.jpg | 18689 | 2012-05-09 16:21:03 |
| powl-20120331.xml | 477630 | 2012-05-09 16:21:03 |
| powl-20120331.xsd | 9703 | 2012-05-09 16:21:03 |
| powl-20120331_cal.xml | 35622 | 2012-05-09 16:21:03 |
| powl-20120331_lab.xml | 113850 | 2012-05-09 16:21:03 |
| powl-20120331_pre.xml | 69393 | 2012-05-09 16:21:03 |
| R1.htm | 26718 | 2012-05-09 16:21:03 |
| R10.htm | 94047 | 2012-05-09 16:21:03 |
| R11.htm | 21738 | 2012-05-09 16:21:03 |
| R12.htm | 21946 | 2012-05-09 16:21:03 |
| R13.htm | 52864 | 2012-05-09 16:21:03 |
| R14.htm | 10902 | 2012-05-09 16:21:03 |
| R15.htm | 39238 | 2012-05-09 16:21:03 |
| R16.htm | 45698 | 2012-05-09 16:21:03 |
| R2.htm | 150768 | 2012-05-09 16:21:03 |
| R3.htm | 30074 | 2012-05-09 16:21:03 |
| R4.htm | 70328 | 2012-05-09 16:21:03 |
| R5.htm | 118666 | 2012-05-09 16:21:03 |
| R6.htm | 17857 | 2012-05-09 16:21:03 |
| R7.htm | 50671 | 2012-05-09 16:21:03 |
| R8.htm | 28064 | 2012-05-09 16:21:03 |
| R9.htm | 51348 | 2012-05-09 16:21:03 |
| report.css | 2721 | 2012-05-09 16:21:03 |
| Show.js | 6423 | 2012-05-09 16:21:03 |