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Charges Related to Restructuring Activities - Summary by Reporting Segment of Accruals as a Result of Restructuring (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Total	$ 0
Charges	3,951
Payments and other adjustments	(2,888)
Total	1,063
PLP-USA [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1,290
Payments and other adjustments	(831)
Total	459
Asia-Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Charges	2,661
Payments and other adjustments	(2,057)
Total	604
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Total	0
Charges	1,648
Payments and other adjustments	(1,498)
Total	150
Severance [Member] | PLP-USA [Member]
Restructuring Cost and Reserve [Line Items]
Charges	416
Payments and other adjustments	(266)
Total	150
Severance [Member] | Asia-Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1,232
Payments and other adjustments	(1,232)
Total	0
Lease Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total	0
Charges	1,643
Payments and other adjustments	(735)
Total	908
Lease Termination Costs [Member] | PLP-USA [Member]
Restructuring Cost and Reserve [Line Items]
Charges	402
Payments and other adjustments	(98)
Total	304
Lease Termination Costs [Member] | Asia-Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1,241
Payments and other adjustments	(637)
Total	604
Asset Disposals [Member]
Restructuring Cost and Reserve [Line Items]
Total	0
Charges	494
Payments and other adjustments	(494)
Total	0
Asset Disposals [Member] | PLP-USA [Member]
Restructuring Cost and Reserve [Line Items]
Charges	306
Payments and other adjustments	(306)
Total	0
Asset Disposals [Member] | Asia-Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Charges	188
Payments and other adjustments	(188)
Total	0
Other [Member]
Restructuring Cost and Reserve [Line Items]
Total	0
Charges	166
Payments and other adjustments	(161)
Total	5
Other [Member] | PLP-USA [Member]
Restructuring Cost and Reserve [Line Items]
Charges	166
Payments and other adjustments	(161)
Total	5
Other [Member] | Asia-Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Charges	0
Payments and other adjustments	0
Total	$ 0

X

- Definition

Payments for restructuring and other adjustments.

+ References

No definition available.

+ Details

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Namespace Prefix:	plpc_
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X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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