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Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Losses from fair value adjustments assets and liabilities | $ (4,051) | $ 4,708 | $ (4,358) | $ (2,514) |
Collateral dependent loans |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value | 8,384 |  | 8,384 |  | $ 4,175
Fair Value Nonrecurring Basis |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 4,225
Fair Value Nonrecurring Basis | Collateral dependent loans |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value | 8,384 |  | 8,384 |  | 4,175
Losses from fair value adjustments assets and liabilities | (4,051) | 4,749 | (4,358) | (2,281) |
Fair Value Nonrecurring Basis | Foreclosed assets |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 50
Losses from fair value adjustments assets and liabilities | 0 | $ (41) | 0 | $ (233) |
Fair Value Nonrecurring Basis | Level 1 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 0
Fair Value Nonrecurring Basis | Level 1 | Collateral dependent loans |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value | 0 |  | 0 |  | 0
Fair Value Nonrecurring Basis | Level 1 | Foreclosed assets |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 0
Fair Value Nonrecurring Basis | Level 2 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 0
Fair Value Nonrecurring Basis | Level 2 | Collateral dependent loans |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value | 0 |  | 0 |  | 0
Fair Value Nonrecurring Basis | Level 2 | Foreclosed assets |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 0
Fair Value Nonrecurring Basis | Level 3 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | 4,225
Fair Value Nonrecurring Basis | Level 3 | Collateral dependent loans |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value | $ 8,384 |  | $ 8,384 |  | 4,175
Fair Value Nonrecurring Basis | Level 3 | Foreclosed assets |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total assets measured at fair value |  |  |  |  | $ 50

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