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| 0000080420-21-000029-index.html | 2021-05-05 15:31:50 | |
| 0000080420-21-000029.txt | 2021-05-05 15:31:50 | |
 0000080420-21-000029-xbrl.zip | 190791 | 2021-05-05 15:31:50 |
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| powl-20210331_cal.xml | 75309 | 2021-05-05 15:31:50 |
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| powlexhibit321q22021.htm | 5026 | 2021-05-05 15:31:50 |
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| report.css | 2767 | 2021-05-05 15:31:50 |
| Show.js | 1085 | 2021-05-05 15:31:50 |