XML 36 R75.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value of Financial Assets and Liabilities - Additional Information (Detail) (USD $)
 12 Months Ended 3 Months Ended 1 Months Ended
Dec. 31, 2014
Mar. 31, 2013
Apr. 30, 2013
Jan. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fair value liabilities Level 2 $ 0plpc_FairValueLiabilitiesLevelTwoTransfersInAndOutAmount      
Additional earn-out consideration payment       1,200,000plpc_AdditionalEarnOutContingentConsiderationPaymentMaximum
Forma Line Industries CC [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Accrued liability additional earn out consideration payment   100,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= plpc_FormaLineIndustriesCcMember		    
Period of earn-out contingent consideration   1 year    
Australian Electricity Systems PTY Ltd [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Accrued liability additional earn out consideration payment     $ 400,000us-gaap_PaymentsToAcquireBusinessesGross
/ dei_LegalEntityAxis
= plpc_AustralianElectricitySystemsPtyLtdMember