XML 75 R64.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Loans and Allowance for Credit Losses - Schedule of Contractual Maturities of Loans Classified by Major Type (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | $ 21,092,851 | $ 21,092,851
Loans with a predetermined interest rate | 8,671,190 |
Loans with a variable interest rate | 12,421,661 |
Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 1,035,649 |
Commercial and Industrial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 2,513,324 |
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 2,860,629 |
Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 8,475,015 |
Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 5,829,013 |
Consumer and Other [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 379,221 |
Financing Receivable, Maturity of One Year or Less [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 2,204,383 | 2,204,383
Loans with a predetermined interest rate | 533,187 |
Loans with a variable interest rate | 1,671,196 |
Financing Receivable, Maturity of One Year or Less [Member] | Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 321,986 |
Financing Receivable, Maturity of One Year or Less [Member] | Commercial and Industrial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 778,650 |
Financing Receivable, Maturity of One Year or Less [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 693,907 |
Financing Receivable, Maturity of One Year or Less [Member] | Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 53,794 |
Financing Receivable, Maturity of One Year or Less [Member] | Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 271,543 |
Financing Receivable, Maturity of One Year or Less [Member] | Consumer and Other [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 84,503 |
Financing Receivable, Maturity After One Year Through Five Years [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 3,485,317 | 3,485,317
Loans with a predetermined interest rate | 1,555,466 |
Loans with a variable interest rate | 1,929,851 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 164,851 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Commercial and Industrial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 1,261,255 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 540,453 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 242,565 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 1,199,783 |
Financing Receivable, Maturity After One Year Through Five Years [Member] | Consumer and Other [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 76,410 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 5,351,818 | 5,351,818
Loans with a predetermined interest rate | 3,111,854 |
Loans with a variable interest rate | 2,239,964 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 240,467 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Commercial and Industrial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 362,261 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 573,702 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 1,888,707 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 2,137,316 |
Financing Receivable, Maturity After Five Years Through Fifteen Years [Member] | Consumer and Other [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 149,365 |
Financing Receivable, Maturity After Fifteen Years [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 10,051,333 | $ 10,051,333
Loans with a predetermined interest rate | 3,470,683 |
Loans with a variable interest rate | 6,580,650 |
Financing Receivable, Maturity After Fifteen Years [Member] | Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 308,345 |
Financing Receivable, Maturity After Fifteen Years [Member] | Commercial and Industrial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 111,158 |
Financing Receivable, Maturity After Fifteen Years [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 1,052,567 |
Financing Receivable, Maturity After Fifteen Years [Member] | Real Estate [Member] | 1-4 Family Residential (Includes Home Equity) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 6,289,949 |
Financing Receivable, Maturity After Fifteen Years [Member] | Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | 2,220,371 |
Financing Receivable, Maturity After Fifteen Years [Member] | Consumer and Other [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans, net | $ 68,943 |

X
- Definition Loans receivable before allowance excluding loan purchase premiums and discounts. Excluding loans held for sale. + References No definition available. + Details
Name: | pb_LoansReceivableBeforeAllowanceExcludingPpAndDiscount
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 of loan with fixed rate of interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-3 + Details
Name: | us-gaap_LoansReceivableWithFixedRatesOfInterest1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of loan with variable or adjustable rate of interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-3 + Details
Name: | us-gaap_LoansReceivableWithVariableRatesOfInterest1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + 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 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(5)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=pb_FinancingReceivableMaturityOfOneYearOrLessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=pb_FinancingReceivableMaturityAfterOneYearThroughFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=pb_FinancingReceivableMaturityAfterFiveYearsThroughFifteenYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=pb_FinancingReceivableMaturityAfterFifteenYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |