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Goodwill and Other Intangibles - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Accumulated amortization | $ (2,596) | $ (2,502)
Net carrying amount, excluding goodwill | 11,131 |
Goodwill | 11,031 | 11,031
Gross carrying amount | 13,727 | 13,727
Net carrying amount | $ 11,131 | 11,225
Core deposit intangible |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amortization Period | 10 years |
Gross carrying amount, excluding goodwill | $ 2,213 | 2,213
Accumulated amortization | (2,116) | (2,031)
Net carrying amount, excluding goodwill | $ 97 | 182
Third-party originator's intangible |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amortization Period | 7 years |
Gross carrying amount, excluding goodwill | $ 483 | 483
Accumulated amortization | (480) | (471)
Net carrying amount, excluding goodwill | $ 3 | $ 12

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