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Goodwill and Other Intangibles - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Accumulated amortization | $ (2,169) | $ (2,115)
Goodwill | 11,031 | 11,031
Gross carrying amount | 13,727 | 13,727
Net carrying amount | $ 11,558 | 11,612
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 | (1,784) | (1,746)
Net carrying amount, excluding goodwill | $ 429 | 467
Third-party originators intangible |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Amortization Period | 7 years |
Gross carrying amount, excluding goodwill | $ 483 | 483
Accumulated amortization | (385) | (369)
Net carrying amount, excluding goodwill | $ 98 | $ 114

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