XML 47 R40.htm IDEA: XBRL DOCUMENT
v3.25.2

Loans and Allowance for Credit Losses - Types of Loans in Loan Portfolio (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for sale |  | $ 6,004 | $ 10,690
Loans held for investment |  | 20,903,944 | 21,057,616
Total loans, including Warehouse Purchase Program |  | 22,197,388 | 22,149,209
Residential Mortgage Loans [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for sale |  | 6,004 | 10,690
Warehouse Purchase Program [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 1,287,440 | 1,080,903
Total loans, including Warehouse Purchase Program |  | 1,287,440 | 1,080,903
Commercial and Industrial [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 2,410,882 | 2,508,088
Total loans, including Warehouse Purchase Program |  | 2,410,882 | 2,508,088
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 2,873,238 | 2,859,281
Total loans, including Warehouse Purchase Program |  | 2,873,238 | 2,859,281
Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 8,394,183 | 8,476,899
Total loans, including Warehouse Purchase Program | [1] | 8,400,187 | 8,487,589
Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 5,827,645 | 5,800,985
Total loans, including Warehouse Purchase Program |  | 5,827,645 | 5,800,985
Real Estate [Member] | Farmland [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 672,871 | 681,883
Agriculture [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 356,378 | 351,663
Consumer and Other [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | 368,747 | 378,817
Total loans, including Warehouse Purchase Program |  | $ 368,747 | $ 378,817
[1] | Includes $6.0 million and $10.7 million of residential mortgage loans held for sale at June 30, 2025 and December 31, 2024, respectively.

X
- Definition Loans and lease receivable net of deferred income. + References No definition available. + Details
Name: | pb_LoansAndLeaseReceivableNetOfDeferredIncome
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
Name: | pb_LoansAndLeasesReceivableNetOfDeferredIncomeAndLoanReceivableHeldForSaleAmount
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before valuation allowance, of financing receivable classified as held-for-sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477011/948-310-45-1 + Details
Name: | us-gaap_LoansReceivableHeldForSaleAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_RealEstateSectorMember
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_FamilyResidential14IncludesHomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_AgriculturalSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=pb_ConsumerAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |