XML 58 R51.htm IDEA: XBRL DOCUMENT
v3.25.3

Loans and Allowance for Credit Losses - Allowance for Credit Losses on Loans by Category of Loan (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | $ 346,084 | $ 359,852 | $ 351,805 | $ 332,362
Initial allowance on loans purchased with credit deterioration |  |  |  | 26,078
Provision for credit losses | 0 |  | 0 | 7,923
Charge-offs | (7,512) | (6,540) | (15,678) | (16,259)
Recoveries | 1,054 | 1,085 | 3,499 | 4,293
Net (charge-offs) recoveries | (6,458) | (5,455) | (12,179) | (11,966)
Allowance for credit losses on loans, ending balance | 339,626 | 354,397 | 339,626 | 354,397
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 77,818 | 76,776 | 77,984 | 87,775
Initial allowance on loans purchased with credit deterioration |  |  |  | 942
Provision for credit losses | (520) | (633) | (845) | (12,467)
Charge-offs | (166) | (378) | (247) | (486)
Recoveries | 132 |  | 372 | 1
Net (charge-offs) recoveries | (34) | (378) | 125 | (485)
Allowance for credit losses on loans, ending balance | 77,264 | 75,765 | 77,264 | 75,765
Real Estate [Member] | Agriculture [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 26,848 | 29,479 | 27,693 | 11,380
Initial allowance on loans purchased with credit deterioration |  |  |  | 14,309
Provision for credit losses | (3,083) | (450) | (3,942) | 3,577
Charge-offs | (10) | (109) | (47) | (631)
Recoveries | 50 | 225 | 101 | 510
Net (charge-offs) recoveries | 40 | 116 | 54 | (121)
Allowance for credit losses on loans, ending balance | 23,805 | 29,145 | 23,805 | 29,145
Real Estate [Member] | 1-4 Family [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 82,105 | 80,689 | 80,735 | 77,652
Initial allowance on loans purchased with credit deterioration |  |  |  | 344
Provision for credit losses | (700) | 1,442 | 2,063 | 5,017
Charge-offs | (861) | (442) | (2,329) | (1,336)
Recoveries | 8 | 33 | 83 | 45
Net (charge-offs) recoveries | (853) | (409) | (2,246) | (1,291)
Allowance for credit losses on loans, ending balance | 80,552 | 81,722 | 80,552 | 81,722
Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 89,121 | 95,728 | 92,147 | 88,664
Initial allowance on loans purchased with credit deterioration |  |  |  | 4,306
Provision for credit losses | (4,892) | (921) | (7,685) | 1,439
Charge-offs | (1,102) | (297) | (1,601) | (808)
Recoveries | 87 | 39 | 353 | 948
Net (charge-offs) recoveries | (1,015) | (258) | (1,248) | 140
Allowance for credit losses on loans, ending balance | 83,214 | 94,549 | 83,214 | 94,549
Commercial and Industrial [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 62,256 | 70,112 | 65,500 | 59,832
Initial allowance on loans purchased with credit deterioration |  |  |  | 6,176
Provision for credit losses | 8,216 | (2,216) | 6,346 | 4,948
Charge-offs | (3,804) | (3,746) | (6,382) | (8,283)
Recoveries | 463 | 437 | 1,667 | 1,914
Net (charge-offs) recoveries | (3,341) | (3,309) | (4,715) | (6,369)
Allowance for credit losses on loans, ending balance | 67,131 | 64,587 | 67,131 | 64,587
Consumer and Other [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 7,936 | 7,068 | 7,746 | 7,059
Initial allowance on loans purchased with credit deterioration |  |  |  | 1
Provision for credit losses | 979 | 2,778 | 4,063 | 5,409
Charge-offs | (1,569) | (1,568) | (5,072) | (4,715)
Recoveries | 314 | 351 | 923 | 875
Net (charge-offs) recoveries | (1,255) | (1,217) | (4,149) | (3,840)
Allowance for credit losses on loans, ending balance | $ 7,660 | $ 8,629 | $ 7,660 | $ 8,629

X
- Definition Allowance for loan and lease loss, recovery (write-offs). + References No definition available. + Details
Name: | pb_AllowanceForLoanAndLeaseLossRecoveryWriteoffs
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Allowance for loans and lease losses writeoffs. + References No definition available. + Details
Name: | pb_AllowanceForLoansAndLeaseLossesWriteoffs
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Allowance for loans and lease losses writeoffs net. + References No definition available. + Details
Name: | pb_AllowanceForLoansAndLeaseLossesWriteoffsNet
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loans and lease receivable allowance. + References No definition available. + Details
Name: | pb_LoansAndLeaseReceivableAllowance
Namespace Prefix: | pb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Provision for loans and lease losses. + References No definition available. + Details
Name: | pb_ProvisionForLoansAndLeaseLosses
Namespace Prefix: | pb_
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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount at purchase price of financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 19 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-19 + Details
Name: | us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_AgricultureAndAgricultureRealEstateIncludesFarmlandMember
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=us-gaap_CommercialAndIndustrialSectorMember
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: |