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Revenue Recognition - Changes in Deferred Revenue Balances (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Deferred Revenue Arrangement [Line Items] |  |  |
Gross deferred revenue, beginning balance |  | $ 63,970 | $ 107,200
Revenue earned from prior balances |  | (52,747) | (84,465)
Billings during period | [1] | 222,654 | 153,144
Revenue earned for new billings during the period |  | (114,251) | (108,854)
Other adjustments |  | (687) | (1,193)
Gross deferred revenue, ending balance |  | 118,939 | 65,832
University Group [Member] | CTU [Member] |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |
Gross deferred revenue, beginning balance |  | 42,531 | 67,245
Revenue earned from prior balances |  | (35,052) | (54,712)
Billings during period | [1] | 152,877 | 100,012
Revenue earned for new billings during the period |  | (77,728) | (68,709)
Other adjustments |  | (308) | (1,464)
Gross deferred revenue, ending balance |  | 82,320 | 42,372
University Group [Member] | AIUS [Member] |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |
Gross deferred revenue, beginning balance |  | 21,439 | 39,955
Revenue earned from prior balances |  | (17,695) | (29,753)
Billings during period | [1] | 69,777 | 53,132
Revenue earned for new billings during the period |  | (36,523) | (40,145)
Other adjustments |  | (379) | 271
Gross deferred revenue, ending balance |  | $ 36,619 | $ 23,460
[1] | Billings during period includes adjustments for prior billings.

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Data Type: | xbrli:monetaryItemType
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- Definition For the current period, the amount of new charges billed to customers for services to be provided for the current academic term. + References No definition available. + Details
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- Definition The amount of other adjustments to the deferred revenue balance during the current period. + References No definition available. + Details
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Namespace Prefix: | prdo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The gross amount of deferred revenue before offsetting with any contract asset balances. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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
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- Details
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- Details
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