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|---|---|---|
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| 0000950170-22-002892-index.html | 2022-03-04 13:18:57 | |
| 0000950170-22-002892.txt | 2022-03-04 13:18:57 | |
 0000950170-22-002892-xbrl.zip | 512116 | 2022-03-04 13:18:57 |
| FilingSummary.xml | 57950 | 2022-03-04 13:18:57 |
| Financial_Report.xlsx | 145380 | 2022-03-04 13:18:57 |
 img33737178_0.jpg | 33453 | 2022-03-04 13:18:57 |
| MetaLinks.json | 1119268 | 2022-03-04 13:18:57 |
| plpc-20211231.htm | 5563093 | 2022-03-04 13:18:57 |
| plpc-20211231.xsd | 91118 | 2022-03-04 13:18:57 |
| plpc-20211231_cal.xml | 104416 | 2022-03-04 13:18:57 |
| plpc-20211231_def.xml | 339768 | 2022-03-04 13:18:57 |
| plpc-20211231_htm.xml | 5292953 | 2022-03-04 13:18:57 |
| plpc-20211231_lab.xml | 822799 | 2022-03-04 13:18:57 |
| plpc-20211231_pre.xml | 610872 | 2022-03-04 13:18:57 |
| plpc-ex10_26.htm | 254111 | 2022-03-04 13:18:57 |
| plpc-ex10_27.htm | 404781 | 2022-03-04 13:18:57 |
| plpc-ex21.htm | 24760 | 2022-03-04 13:18:57 |
| plpc-ex23_1.htm | 7165 | 2022-03-04 13:18:57 |
| plpc-ex31_1.htm | 11082 | 2022-03-04 13:18:57 |
| plpc-ex31_2.htm | 12242 | 2022-03-04 13:18:57 |
| plpc-ex32_1.htm | 9096 | 2022-03-04 13:18:57 |
| plpc-ex32_2.htm | 8934 | 2022-03-04 13:18:57 |
| R1.htm | 69110 | 2022-03-04 13:18:57 |
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| R9.htm | 26408 | 2022-03-04 13:18:57 |
| report.css | 2768 | 2022-03-04 13:18:57 |
| Show.js | 1086 | 2022-03-04 13:18:57 |