XML 60 R53.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Loans and Allowance for Credit Losses - Schedule of Loan Modifications (Details) | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Commercial and Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financial Effect on Term Extension | Modified to a 7 year term |
Construction, Land Development and Other Land Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financial Effect on Term Extension |  | Less than 12-month extension
Agriculture [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financial Effect on Term Extension | Modified to a 2 year term |

X
- Definition Financial effect on modifications maid on loan due to term extension. + References No definition available. + Details
Name: | pb_FinancialEffectOnModificationsMaidOnLoanDueToTermExtension
Namespace Prefix: | pb_
Data Type: | xbrli:stringItemType
Balance Type: | na
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: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pb_ConstructionLandDevelopmentAndOtherLandLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pb_AgricultureAndAgricultureRealEstateIncludesFarmlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |