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Fair Value - Summary of Quantitative Information about Level 3 Fair Value Measurements of Assets Measured on a Nonrecurring Basis (Detail) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Selling Costs [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Collateral dependent loans | $ 21,337 | $ 56,068
Valuation Technique | Discounted appraised value technique | Discounted appraised value technique
Unobservable input | Selling Costs | Selling Costs
Selling Costs [Member] | Sales Price Technique [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 7.00% |
OREO | $ 100 |
Valuation Technique | Discounted sales price technique |
Unobservable Input | Selling Costs |
Selling Costs [Member] | Maximum [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 15.00% | 15.00%
Selling Costs [Member] | Minimum [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 7.00% | 7.00%
Discount Rate [Member] | Probability weighted expected return technique |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Other equity investments | $ 3,006 |
Valuation technique | Probability weighted expected return technique |
Unobservable input | Discount Rate |
Range | 20.00% |

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