XML 99 R85.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Valuation Allowance for Deferred Tax Assets [Member] |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Valuation allowance, Beginning balance | [1] | $ 29,027 | $ 44,999 | $ 48,037
Valuation allowance, Additions/Charges to Expense | [1] | 3,151 | 68 |
Valuation allowance, Deductions/ Other | [1] |  | (16,040) | (3,038)
Valuation allowance, Ending balance | [1] | 32,178 | 29,027 | 44,999
Valuation Allowance for Credit Losses [Member] |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Valuation allowance, Beginning balance |  | 42,147 | 31,964 | 24,836
Valuation allowance, Additions/Charges to Expense |  | 44,349 | 47,561 | 43,470
Valuation allowance, Deductions/ Other |  | (47,241) | (37,378) | (36,342)
Valuation allowance, Ending balance |  | $ 39,255 | $ 42,147 | $ 31,964
[1] | Amounts include both continuing and discontinued operations gross deferred tax balances.

X
- Definition Valuation allowances and reserves deductions or other. + References No definition available. + Details
Name: | prdo_ValuationAllowancesAndReservesDeductionsOrOther
Namespace Prefix: | prdo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 No definition available. + Details
Name: | srt_ValuationAndQualifyingAccountsDisclosureLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForCreditLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |