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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Non-recurring Basis - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent loans | $ 63,114 | $ 31,049
Other real estate owned | 2,360 | 63
Repossessed personal property | 857 |
Bank-owned premises |  | 1,900
Quoted Prices in Active Markets for Identical Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent loans | 0 | 0
Other real estate owned | 0 | 0
Repossessed personal property | 0 |
Bank-owned premises |  | 0
Significant Observable Inputs with No Active Market with Identical Characteristics |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent loans | 0 | 0
Other real estate owned | 0 | 0
Repossessed personal property | 0 |
Bank-owned premises |  | 0
Significant Unobservable Inputs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent loans | 63,114 | 31,049
Other real estate owned | 2,360 | 63
Repossessed personal property | $ 857 |
Bank-owned premises |  | $ 1,900

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