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Fair Value Measurement - Quantitative Information about Recurring Level 3 Fair Value Measurements (Detail) - Mortgage servicing rights $ in Thousands | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Mortgages servicing rights, fair value | $ 6,763 | $ 6,626
Minimum | Discounted cash flow | Constant prepayment rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.06 | 0.06
Minimum | Discounted cash flow | Discount rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.10 | 0.10
Maximum | Discounted cash flow | Constant prepayment rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.11 | 0.11
Maximum | Discounted cash flow | Discount rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.14 | 0.14
Weighted Average | Discounted cash flow | Constant prepayment rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.068 | 0.070
Weighted Average | Discounted cash flow | Discount rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.12 | 0.12

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