XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.21.2

Basis of Presentation - Additional Information (Detail) | 9 Months Ended
--- | ---
Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Percentage of ownership in earnings of subsidiary | 100.00%

X
- Definition Percentage of ownership in earnings of subsidiary. + References No definition available. + Details
Name: | plpc_PercentageOfOwnershipInEarningsOfSubsidiary
Namespace Prefix: | plpc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration