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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Revenue Recognition [Line Items] |  |
Revenue recognized estimated reserve based on historical evidence | $ 2.2 | $ 2.1

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- Definition A liability established for situations in which a student withdraws from an institutions and revenue needs to be reversed, based on historical evidence for similar situations. + References No definition available. + Details
Name: | prdo_RefundLiabilityReserve
Namespace Prefix: | prdo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Revenue Recognition Line Items + References No definition available. + Details
Name: | prdo_RevenueRecognitionLineItems
Namespace Prefix: | prdo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration