The acquisition date fair value calculation of contingent consideration in a business combination.

No definition available.

Name:	prdo_ContingentConsiderationFairValue
Namespace Prefix:	prdo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contingent consideration year of expected payment year and month one.

+ References

No definition available.

+ Details

Name:	prdo_ContingentConsiderationYearOfExpectedPaymentYearAndMonthOne
Namespace Prefix:	prdo_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Contingent consideration year of expected payment year and month two.

+ References

No definition available.

+ Details

Name:	prdo_ContingentConsiderationYearOfExpectedPaymentYearAndMonthTwo
Namespace Prefix:	prdo_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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

- Details

Name:	us-gaap_ContingentConsiderationByTypeAxis=prdo_ContingentConsiderationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=prdo_OtherAccruedExpensesMember
Namespace Prefix:
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Contingencies - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
	Dec. 01, 2022	Mar. 31, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Contingent consideration year of expected payment year and month one		2024-01
Contingent consideration year of expected payment year and month two		2025-01
Dojo [Member]
Loss Contingencies [Line Items]
Aggregate fair value amount	$ 12.7	$ 12.7
Contingent Consideration [Member] \| Dojo [Member]
Loss Contingencies [Line Items]
Contingent consideration payment	$ 15.0	15.0
Other Accrued Expenses [Member]
Loss Contingencies [Line Items]
Accrual for legal fees		$ 4.9	$ 1.7