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Fair Value Measurements - Assets Recognized in Consolidated Balance Sheets Measured at Fair Value on Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	$ 43,645	$ 44,032
Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	24,038	28,094
State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	156,996	145,498
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	0	0
Significant Other Observable Inputs (Level 2) | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	43,645	44,032
Significant Other Observable Inputs (Level 2) | Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	24,038	28,094
Significant Other Observable Inputs (Level 2) | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	156,996	145,498
Significant Unobservable Inputs (Level 3) | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	$ 0	$ 0

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- Definition

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+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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