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| 0001387131-17-004083-index.html | 2017-08-11 11:44:26 | |
| 0001387131-17-004083.txt | 2017-08-11 11:44:26 | |
 0001387131-17-004083-xbrl.zip | 93216 | 2017-08-11 11:44:26 |
| ex31-1.htm | 15672 | 2017-08-11 11:44:26 |
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| ex32-1.htm | 7884 | 2017-08-11 11:44:26 |
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| FilingSummary.xml | 31221 | 2017-08-11 11:44:26 |
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| ppsi-10q_063017.htm | 804021 | 2017-08-11 11:44:26 |
| ppsi-20170630.xml | 1021094 | 2017-08-11 11:44:26 |
| ppsi-20170630.xsd | 33218 | 2017-08-11 11:44:26 |
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| report.css | 2767 | 2017-08-11 11:44:26 |
| Show.js | 1410 | 2017-08-11 11:44:26 |