Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Identification of the specific currency to be sold upon settlement or exercise of the foreign currency derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeCurrencySold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=plt_ForeignExchangeForwardGbpMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=plt_ForeignExchangeForwardAudMember
Namespace Prefix:
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FOREIGN CURRENCY DERIVATIVES (Details 2) - 9 months ended Dec. 31, 2018 € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands	USD ($)	EUR (€)	GBP (£)	AUD ($)
Foreign Exchange Forward, EURO [Member]
Derivative [Line Items]
Notional amount of contracts	$ 43,340	€ 37,800
Position	Sell EUR
Maturity	1 month
Foreign Exchange Forward, GBP [Member]
Derivative [Line Items]
Notional amount of contracts	$ 11,055		£ 8,700
Position	Sell GBP
Maturity	1 month
Foreign Exchange Forward, AUD [Member]
Derivative [Line Items]
Notional amount of contracts	$ 14,723			$ 20,900
Position	Sell AUD
Maturity	1 month