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Business Combinations - Additional Information (Detail) (Australian Electricity [Member]) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended
	Jan. 31, 2012 AUD	Apr. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jan. 31, 2012 AUD
Business Acquisition [Line Items]
Acquisition of outstanding equity				6.3us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember
Business combination working capital adjustment	0.5plpc_BusinessCombinationWorkingCapitalAdjustment / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember
cash acquired from acquisition	1.8us-gaap_CashAcquiredFromAcquisition / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember
Additional earn-out consideration payment as of purchase price				1.1plpc_BusinessAcquisitionContingentConsiderationPotentialCashPayments / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember
Contingent consideration liability			0.4us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember
Contingent consideration paid		$ 0.4us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = plpc_AustralianElectricityMember

X

- Definition

Business Acquisition Contingent Consideration Potential Cash Payments

+ References

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- Definition

Business combination working capital adjustment.

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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