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Fair Value - Summary of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Other Real Estate Owned Measured at Fair Value on a Nonrecurring Basis Table [Line Items] |  |
Loans held for sale | $ 121,943 | $ 152,931
OREO | 157 |
Fair Value, Nonrecurring [Member] |  |
Disclosure of Other Real Estate Owned Measured at Fair Value on a Nonrecurring Basis Table [Line Items] |  |
Impaired loans, net | 8,344 | 2,187
Loans held for sale | 121,943 | 152,931
OREO | 157 |
Fair Value, Nonrecurring [Member] | Level 2 [Member] |  |
Disclosure of Other Real Estate Owned Measured at Fair Value on a Nonrecurring Basis Table [Line Items] |  |
Loans held for sale | 121,943 | 152,931
Fair Value, Nonrecurring [Member] | Level 3 [Member] |  |
Disclosure of Other Real Estate Owned Measured at Fair Value on a Nonrecurring Basis Table [Line Items] |  |
Impaired loans, net | 8,344 | $ 2,187
OREO | $ 157 |

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