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Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2025
Accounting Policies [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_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration