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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 | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent impaired loans | $ 44,120 | $ 31,049
Other real estate owned | 148 | 63
Bank-owned premises | 1,900 | 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 impaired loans | 0 | 0
Other real estate owned | 0 | 0
Bank-owned premises | 0 | 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 impaired loans | 0 | 0
Other real estate owned | 0 | 0
Bank-owned premises | 0 | 0
Fair Value, Inputs, Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral dependent impaired loans | 44,120 | 31,049
Other real estate owned | 148 | 63
Bank-owned premises | $ 1,900 | $ 1,900

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