Fair Value Measurements - Assets Recognized in Consolidated Balance Sheets Measured at Fair Value on Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	$ 27,083	$ 44,268
Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	24,942	24,300
State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	199,782	174,192
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	27,083	44,268
Significant Other Observable Inputs (Level 2) | Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	24,942	24,300
Significant Other Observable Inputs (Level 2) | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair Value	199,782	174,192
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