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Fair Value - Summary of Quantitative Information about Level 3 Fair Value Measurements (Detail) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Impaired loans, net | $ 8,344 | $ 2,187
Selling Costs [Member] |  |
Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Impaired loans, net | $ 8,108 | $ 2,097
Valuation Technique | Discounted appraised value technique | Discounted appraised value technique
Unobservable Input | Selling Costs | Selling Costs
Weighted Average | 7.00% | 10.00%
Discount Rate [Member] |  |
Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Impaired loans, net | $ 236 | $ 90
Valuation Technique | Discounted cash flows technique | Discounted cash flows technique
Unobservable Input | Discount Rate | Discount Rate
Weighted Average |  | 6.00%
OREO | $ 157 |
Valuation Technique | Discounted appraised value technique |
Unobservable Input | Discount Rate |
Weighted Average | 7.00% |
Discount Rate [Member] | Maximum [Member] |  |
Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Weighted Average | 7.00% |
Discount Rate [Member] | Minimum [Member] |  |
Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Weighted Average | 4.00% |

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