Securities - Schedule of company's investments' gross unrealized losses and fair value, aggregated by investment category and length of time (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities
Less than 12 Months, Fair Value	$ 106,008	$ 127,876
Less than 12 Months, Unrealized Losses	(2,925)	(2,478)
12 Months or More, Fair Value	91,026	80,907
12 Months or More, Unrealized Losses	(8,146)	(9,987)
Total, Fair Value	197,034	208,783
Total, Unrealized Losses	(11,071)	(12,465)
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	12,433	12,254
12 Months or More, Unrealized Losses	(67)	(246)
Total, Fair Value	12,433	12,254
Total, Unrealized Losses	(67)	(246)
Subordinated notes
Securities
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	23,595	24,118
12 Months or More, Unrealized Losses	(1,805)	(2,824)
Total, Fair Value	23,595	24,118
Total, Unrealized Losses	(1,805)	(2,824)
State and municipal obligations
Securities
Less than 12 Months, Fair Value	106,008	127,876
Less than 12 Months, Unrealized Losses	(2,925)	(2,478)
12 Months or More, Fair Value	54,998	44,535
12 Months or More, Unrealized Losses	(6,274)	(6,917)
Total, Fair Value	161,006	172,411
Total, Unrealized Losses	$ (9,199)	$ (9,395)