Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001387131-21-004036-index-headers.html | 2021-03-30 16:54:06 | |
| 0001387131-21-004036-index.html | 2021-03-30 16:54:06 | |
| 0001387131-21-004036.txt | 2021-03-30 16:54:06 | |
 0001387131-21-004036-xbrl.zip | 153438 | 2021-03-30 16:54:06 |
| ex21-1.htm | 4100 | 2021-03-30 16:54:06 |
| ex23-1.htm | 2999 | 2021-03-30 16:54:06 |
| ex31-1.htm | 13069 | 2021-03-30 16:54:06 |
| ex31-2.htm | 12508 | 2021-03-30 16:54:06 |
| ex32-1.htm | 6483 | 2021-03-30 16:54:06 |
| ex32-2.htm | 6669 | 2021-03-30 16:54:06 |
| FilingSummary.xml | 48005 | 2021-03-30 16:54:06 |
| Financial_Report.xlsx | 115182 | 2021-03-30 16:54:06 |
| ppsi-10k_123120.htm | 1964623 | 2021-03-30 16:54:06 |
| ppsi-20201231.xml | 1201376 | 2021-03-30 16:54:06 |
| ppsi-20201231.xsd | 51934 | 2021-03-30 16:54:06 |
| ppsi-20201231_cal.xml | 106549 | 2021-03-30 16:54:06 |
| ppsi-20201231_def.xml | 216638 | 2021-03-30 16:54:06 |
| ppsi-20201231_lab.xml | 448931 | 2021-03-30 16:54:06 |
| ppsi-20201231_pre.xml | 396529 | 2021-03-30 16:54:06 |
 ppsi10k123120001.jpg | 10897 | 2021-03-30 16:54:06 |
| R1.htm | 38859 | 2021-03-30 16:54:06 |
| R10.htm | 13596 | 2021-03-30 16:54:06 |
| R11.htm | 11817 | 2021-03-30 16:54:06 |
| R12.htm | 25972 | 2021-03-30 16:54:06 |
| R13.htm | 39994 | 2021-03-30 16:54:06 |
| R14.htm | 6048 | 2021-03-30 16:54:06 |
| R15.htm | 45776 | 2021-03-30 16:54:06 |
| R16.htm | 16905 | 2021-03-30 16:54:06 |
| R17.htm | 17587 | 2021-03-30 16:54:06 |
| R18.htm | 16676 | 2021-03-30 16:54:06 |
| R19.htm | 14585 | 2021-03-30 16:54:06 |
| R2.htm | 113331 | 2021-03-30 16:54:06 |
| R20.htm | 73093 | 2021-03-30 16:54:06 |
| R21.htm | 7377 | 2021-03-30 16:54:06 |
| R22.htm | 48721 | 2021-03-30 16:54:06 |
| R23.htm | 76569 | 2021-03-30 16:54:06 |
| R24.htm | 64457 | 2021-03-30 16:54:06 |
| R25.htm | 33990 | 2021-03-30 16:54:06 |
| R26.htm | 6063 | 2021-03-30 16:54:06 |
| R27.htm | 75411 | 2021-03-30 16:54:06 |
| R28.htm | 9827 | 2021-03-30 16:54:06 |
| R29.htm | 38037 | 2021-03-30 16:54:06 |
| R3.htm | 23825 | 2021-03-30 16:54:06 |
| R30.htm | 32104 | 2021-03-30 16:54:06 |
| R31.htm | 14140 | 2021-03-30 16:54:06 |
| R32.htm | 16363 | 2021-03-30 16:54:06 |
| R33.htm | 14320 | 2021-03-30 16:54:06 |
| R34.htm | 10498 | 2021-03-30 16:54:06 |
| R35.htm | 63462 | 2021-03-30 16:54:06 |
| R36.htm | 49416 | 2021-03-30 16:54:06 |
| R37.htm | 68820 | 2021-03-30 16:54:06 |
| R38.htm | 62137 | 2021-03-30 16:54:06 |
| R39.htm | 32858 | 2021-03-30 16:54:06 |
| R4.htm | 83625 | 2021-03-30 16:54:06 |
| R40.htm | 52143 | 2021-03-30 16:54:06 |
| R41.htm | 33343 | 2021-03-30 16:54:06 |
| R42.htm | 34588 | 2021-03-30 16:54:06 |
| R43.htm | 37787 | 2021-03-30 16:54:06 |
| R44.htm | 9366 | 2021-03-30 16:54:06 |
| R45.htm | 69129 | 2021-03-30 16:54:06 |
| R46.htm | 15920 | 2021-03-30 16:54:06 |
| R47.htm | 6154 | 2021-03-30 16:54:06 |
| R48.htm | 34255 | 2021-03-30 16:54:06 |
| R49.htm | 8000 | 2021-03-30 16:54:06 |
| R5.htm | 16904 | 2021-03-30 16:54:06 |
| R50.htm | 66903 | 2021-03-30 16:54:06 |
| R51.htm | 12962 | 2021-03-30 16:54:06 |
| R52.htm | 6692 | 2021-03-30 16:54:06 |
| R53.htm | 18962 | 2021-03-30 16:54:06 |
| R54.htm | 4832 | 2021-03-30 16:54:06 |
| R55.htm | 13958 | 2021-03-30 16:54:06 |
| R56.htm | 28435 | 2021-03-30 16:54:06 |
| R57.htm | 11764 | 2021-03-30 16:54:06 |
| R58.htm | 9203 | 2021-03-30 16:54:06 |
| R59.htm | 12785 | 2021-03-30 16:54:06 |
| R6.htm | 126697 | 2021-03-30 16:54:06 |
| R60.htm | 23998 | 2021-03-30 16:54:06 |
| R61.htm | 36068 | 2021-03-30 16:54:06 |
| R62.htm | 8637 | 2021-03-30 16:54:06 |
| R63.htm | 30728 | 2021-03-30 16:54:06 |
| R64.htm | 10563 | 2021-03-30 16:54:06 |
| R65.htm | 9498 | 2021-03-30 16:54:06 |
| R66.htm | 37023 | 2021-03-30 16:54:06 |
| R67.htm | 4715 | 2021-03-30 16:54:06 |
| R68.htm | 22882 | 2021-03-30 16:54:06 |
| R69.htm | 8620 | 2021-03-30 16:54:06 |
| R7.htm | 30756 | 2021-03-30 16:54:06 |
| R70.htm | 12037 | 2021-03-30 16:54:06 |
| R71.htm | 19295 | 2021-03-30 16:54:06 |
| R72.htm | 7443 | 2021-03-30 16:54:06 |
| R73.htm | 25961 | 2021-03-30 16:54:06 |
| R74.htm | 11783 | 2021-03-30 16:54:06 |
| R75.htm | 38263 | 2021-03-30 16:54:06 |
| R76.htm | 8217 | 2021-03-30 16:54:06 |
| R77.htm | 5616 | 2021-03-30 16:54:06 |
| R78.htm | 7306 | 2021-03-30 16:54:06 |
| R79.htm | 60722 | 2021-03-30 16:54:06 |
| R8.htm | 20442 | 2021-03-30 16:54:06 |
| R80.htm | 3853 | 2021-03-30 16:54:06 |
| R9.htm | 34770 | 2021-03-30 16:54:06 |
| report.css | 2767 | 2021-03-30 16:54:06 |
| Show.js | 1085 | 2021-03-30 16:54:06 |