XML 145 R86.htm IDEA: XBRL DOCUMENT
v3.20.4

Related Party Transactions - Additional Information (Detail) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 15, 2020 $ / shares shares | Feb. 05, 2020 $ / shares shares | Jan. 02, 2020 $ / shares shares | Dec. 19, 2019 $ / shares shares | Dec. 12, 2019 $ / shares shares | Jul. 02, 2019 $ / shares shares | Feb. 06, 2019 $ / shares shares | Dec. 18, 2018 $ / shares shares | Sep. 14, 2018 $ / shares shares | Aug. 23, 2018 $ / shares shares | Aug. 07, 2018 $ / shares shares | Jun. 15, 2018 $ / shares shares | Jun. 01, 2018 $ / shares shares | May 10, 2018 $ / shares shares | Mar. 15, 2018 $ / shares shares | Feb. 06, 2018 $ / shares shares | Dec. 31, 2020 USD ($) Employee | Dec. 31, 2019 USD ($) Employee | Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount due |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 38,549,000 | $ 57,076,000 |
Austrian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |
Loan amount due |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |
Debt instrument expiration year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2025 |  |
Related party transaction lease expenses paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000 | 100,000 |
Czech Republic Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction lease expenses paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000 | $ 200,000 |
Related party transaction lease expiration term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years | 5 years |
Number of employees | Employee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 | 2 |
Retired Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of shares | shares |  |  | 1,157 | 6,326 |  | 952 |  | 35 |  |  |  |  | 8,800 |  |  |  |  |  |
Shares price per share | $ / shares |  |  | $ 67.71 | $ 71.75 |  | $ 51.20 |  | $ 57.85 |  |  |  |  | $ 73.53 |  |  |  |  |  |
Number of trading days to be considered for average price of stock repurchased |  |  | 30 days | 30 days |  | 30 days |  | 30 days |  |  |  |  | 30 days |  |  |  |  |  |
Current Officers and Retired Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of shares | shares |  | 39,208 |  |  |  |  | 36,413 |  |  |  | 17,141 |  |  |  |  | 7,877 |  |  |
Shares price per share | $ / shares |  | $ 58.65 |  |  |  |  | $ 56.44 |  |  |  | $ 87.19 |  |  |  |  | $ 80.20 |  |  |
Number of trading days to be considered for average price of stock repurchased |  | 30 days |  |  |  |  | 30 days |  |  |  | 30 days |  |  |  |  | 30 days |  |  |
Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of shares | shares | 19,900 |  |  |  | 20,862 |  |  |  | 7,500 |  |  | 1,500 |  | 3,200 | 1,430 |  |  |  |
Shares price per share | $ / shares | $ 62.71 |  |  |  | $ 70.39 |  |  |  | $ 80.95 |  |  | $ 77.06 |  | $ 68.10 | $ 63.63 |  |  |  |
Number of trading days to be considered for average price of stock repurchased | 30 days |  |  |  | 30 days |  |  |  | 30 days |  |  | 30 days |  | 30 days | 30 days |  |  |  |
Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of shares | shares |  |  |  |  |  |  |  |  |  | 2,000 |  |  |  |  |  |  |  |  |
Shares price per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 83.53 |  |  |  |  |  |  |  |  |
Number of trading days to be considered for average price of stock repurchased |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |  |  |  |
X Information Technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 100,000 | $ 200,000
Baker & Hostetler LLP [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 | $ 100,000 | $ 100,000

X
- Definition Debt instrument expiration year. + References No definition available. + Details
Name: | plpc_DebtInstrumentExpirationYear
Namespace Prefix: | plpc_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of employees. + References No definition available. + Details
Name: | plpc_NumberOfEmployees
Namespace Prefix: | plpc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of trading days to be considered for average price of stock repurchased. + References No definition available. + Details
Name: | plpc_PeriodToBeConsideredForAveragePriceOfStockRepurchased
Namespace Prefix: | plpc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related party transaction lease expenses paid. + References No definition available. + Details
Name: | plpc_RelatedPartyTransactionLeaseExpensesPaid
Namespace Prefix: | plpc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related party transaction lease expiration term. + References No definition available. + Details
Name: | plpc_RelatedPartyTransactionLeaseExpirationTerm
Namespace Prefix: | plpc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock repurchased during period price per share. + References No definition available. + Details
Name: | plpc_StockRepurchasedDuringPeriodPricePerShare
Namespace Prefix: | plpc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_LegalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=plpc_AustrianSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=plpc_CzechRepublicSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=plpc_RetiredOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=plpc_CurrentOfficersAndRetiredOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_OfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=plpc_EmployeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=plpc_XInformationTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=plpc_BakerAndHostetlerLLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |