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Contingencies - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Dec. 01, 2022	Jun. 30, 2023	Jun. 30, 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	$ 1.0	$ 13.7
Contingent Consideration [Member] | Dojo [Member]
Loss Contingencies [Line Items]
Contingent consideration payment	$ 15.0	15.0	15.0
Other Accrued Expenses [Member]
Loss Contingencies [Line Items]
Accrual for legal fees		$ 3.2	$ 3.2	$ 1.7

X

- Definition

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

+ References

No definition available.

+ Details

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X

- Definition

Contingent consideration year of expected payment year and month one.

+ References

No definition available.

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X

- Definition

Contingent consideration year of expected payment year and month two.

+ References

No definition available.

+ Details

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Namespace Prefix:	prdo_
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X

- 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
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-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479581/805-30-50-1

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X

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-10

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- Details

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