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Business and Basis of Presentation (Cash and Cash Equivalents) (Details) | Mar. 31, 2020
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Sydney, Australia |
Cash and Cash Equivalents [Line Items] |
Percentage of deposits held in one location (as percent) | 14.00%

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- Definition Percentage of Deposits Held in One Location + References No definition available. + Details
Name: | pbh_PercentageofDepositsHeldinOneLocation
Namespace Prefix: | pbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | srt_StatementGeographicalAxis=pbh_SydneyAustraliaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |