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Fair Value Measurements and Disclosures - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Impaired loans | $ 7,709 | $ 7,274
Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Other real estate owned |  | 1,292
Impaired loans | 7,656 | 7,223
Total assets at fair value | 7,656 | 8,515
Fair Value, Measurements, Nonrecurring | Level 3 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Other real estate owned |  | 1,292
Impaired loans | 7,656 | 7,223
Total assets at fair value | $ 7,656 | $ 8,515

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