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| 0001387131-17-002668-index.html | 2017-05-12 11:31:21 | |
| 0001387131-17-002668.txt | 2017-05-12 11:31:21 | |
 0001387131-17-002668-xbrl.zip | 91630 | 2017-05-12 11:31:21 |
| ex31-1.htm | 10958 | 2017-05-12 11:31:21 |
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| ex32-1.htm | 5467 | 2017-05-12 11:31:21 |
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| FilingSummary.xml | 30994 | 2017-05-12 11:31:21 |
| Financial_Report.xlsx | 55737 | 2017-05-12 11:31:21 |
| ppsi-10q_033117.htm | 427092 | 2017-05-12 11:31:21 |
| ppsi-20170331.xml | 681776 | 2017-05-12 11:31:21 |
| ppsi-20170331.xsd | 33798 | 2017-05-12 11:31:21 |
| ppsi-20170331_cal.xml | 65726 | 2017-05-12 11:31:21 |
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| ppsi-20170331_lab.xml | 284042 | 2017-05-12 11:31:21 |
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| report.css | 2767 | 2017-05-12 11:31:21 |
| Show.js | 1410 | 2017-05-12 11:31:21 |