Securities - Schedule of company's investments' gross unrealized losses and fair value, aggregated by investment category and length of time (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Securities
Less than 12 Months, Fair Value	$ 55,456	$ 7,082
Less than 12 Months, Unrealized Losses	(822)	(811)
12 Months or More, Fair Value	98,317	116,014
12 Months or More, Unrealized Losses	(9,996)	(10,376)
Total, Fair Value	153,773	123,096
Total, Unrealized Losses	(10,818)	(11,187)
U.S. government agencies
Securities
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	27,083	44,268
12 Months or More, Unrealized Losses	(417)	(732)
Total, Fair Value	27,083	44,268
Total, Unrealized Losses	(417)	(732)
State and municipal obligations
Securities
Less than 12 Months, Fair Value	51,346	3,365
Less than 12 Months, Unrealized Losses	(432)	(12)
12 Months or More, Fair Value	50,402	51,163
12 Months or More, Unrealized Losses	(5,927)	(5,730)
Total, Fair Value	101,748	54,528
Total, Unrealized Losses	(6,359)	(5,742)
Subordinated Notes
Securities
Less than 12 Months, Fair Value	4,110	3,717
Less than 12 Months, Unrealized Losses	(390)	(799)
12 Months or More, Fair Value	20,832	20,583
12 Months or More, Unrealized Losses	(3,652)	(3,914)
Total, Fair Value	24,942	24,300
Total, Unrealized Losses	$ (4,042)	$ (4,713)