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v3.23.3

Loans and Allowance for Credit Losses - Troubled Debt Restructurings Identified During Period (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  |  |  | 2
Total Pre-Modification Outstanding Recorded Investment |  |  |  | $ 69
Post- Modification Outstanding Recorded Investment | $ 207 |  | $ 632 | 68
Troubled Debt Restructuring [Policy Text Block] |  |  |  | 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default |  | $ 0 | 0 | $ 0
Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  |  |  | 2
Total Pre-Modification Outstanding Recorded Investment |  |  |  | $ 69
Post- Modification Outstanding Recorded Investment | 207 |  | 632 | 68
Troubled Debt Restructuring [Policy Text Block] |  |  |  | $ 0
Senior Lien | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  |  |  | 2
Total Pre-Modification Outstanding Recorded Investment |  |  |  | $ 69
Post- Modification Outstanding Recorded Investment | 207 |  | 632 | 68
Troubled Debt Restructuring [Policy Text Block] |  |  |  | 0
Extended Maturity [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 0
Post- Modification Outstanding Recorded Investment | 144 |  | 305 |
Extended Maturity [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 0
Post- Modification Outstanding Recorded Investment | 144 |  | 305 |
Extended Maturity [Member] | Senior Lien | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 0
Post- Modification Outstanding Recorded Investment | 144 |  | 305 |
Contractual Interest Rate Reduction [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 10
Post- Modification Outstanding Recorded Investment | 0 |  | 22 |
Contractual Interest Rate Reduction [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 10
Post- Modification Outstanding Recorded Investment | 0 |  | 22 |
Contractual Interest Rate Reduction [Member] | Senior Lien | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 10
Post- Modification Outstanding Recorded Investment | $ 0 |  | $ 22 |
Contractual Payment Modification [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 59
Contractual Payment Modification [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 59
Contractual Payment Modification [Member] | Senior Lien | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | $ 59

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