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Business Combination and Asset Purchase - Schedule of Annual Amortization of Core Deposit Intangible Assets (Detail) $ in Thousands | Sep. 30, 2020 USD ($)
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Business Acquisition [Line Items] |
2020 | $ 721
2021 | 560
2022 | 560
2023 | 560
2024 | 560
2025 | 560
Finite-Lived Intangible Assets, Net | 3,521
Custar [Member] |
Business Acquisition [Line Items] |
2020 | 161
Finite-Lived Intangible Assets, Net | 161
Geneva [Member] |
Business Acquisition [Line Items] |
2020 | 560
2021 | 560
2022 | 560
2023 | 560
2024 | 560
2025 | 560
Finite-Lived Intangible Assets, Net | $ 3,360

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