Fair Value Measurements - Recurring Assets (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
U.S. Government and agency securities
Fair Value Measurements [Abstract]
Total assets, fair value	$ 3,864	$ 2,896
Mortgage-backed securities
Fair Value Measurements [Abstract]
Total assets, fair value	11,396	1,282
State and political securities
Fair Value Measurements [Abstract]
Total assets, fair value	119,847	142,809
Other debt securities
Fair Value Measurements [Abstract]
Total assets, fair value	49,560	46,686
Equity securities
Fair Value Measurements [Abstract]
Total assets, fair value	1,072	1,142
Level I | U.S. Government and agency securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level I | Mortgage-backed securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level I | State and political securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level I | Other debt securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level I | Equity securities
Fair Value Measurements [Abstract]
Total assets, fair value	1,072	1,142
Level II | U.S. Government and agency securities
Fair Value Measurements [Abstract]
Total assets, fair value	3,864	2,896
Level II | Mortgage-backed securities
Fair Value Measurements [Abstract]
Total assets, fair value	11,396	1,282
Level II | State and political securities
Fair Value Measurements [Abstract]
Total assets, fair value	119,847	142,809
Level II | Other debt securities
Fair Value Measurements [Abstract]
Total assets, fair value	49,560	46,686
Level II | Equity securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level III | U.S. Government and agency securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level III | Mortgage-backed securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level III | State and political securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level III | Other debt securities
Fair Value Measurements [Abstract]
Total assets, fair value	0	0
Level III | Equity securities
Fair Value Measurements [Abstract]
Total assets, fair value	$ 0	$ 0