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Fair Value - Summary of Quantitative Information about Level 3 Fair Value Measurements (Detail) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Impaired loans, net |  | $ 54,906
Selling Costs [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range |  | 7.00%
OREO |  | $ 195
Valuation Technique |  | Discounted appraised value technique
Selling Costs [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Collateral dependent loans | $ 68,612 |
Valuation Technique | Discounted appraised value technique |
Unobservable Input | Selling Costs |
Impaired loans, net |  | $ 54,761
Valuation Technique |  | Discounted appraised value technique
Selling Costs [Member] | Cash Flows Technique [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Impaired loans, net |  | $ 145
Selling Costs [Member] | Maximum [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 10.00% |
Range |  | 10.00%
Selling Costs [Member] | Maximum [Member] | Cash Flows Technique [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range |  | 11.00%
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% |
Range |  | 7.00%
Selling Costs [Member] | Minimum [Member] | Cash Flows Technique [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range |  | 4.00%
Discount Rate [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Unobservable Input |  | Selling Costs
Discount Rate [Member] | Appraised Value Technique Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Unobservable Input |  | Selling Costs
Discount Rate [Member] | Cash Flows Technique [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Valuation Technique |  | Discounted cash flows technique
Unobservable Input |  | Discount Rate

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