Securities - Amortized cost and fair value of debt securities based on the contractual maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Amortized Cost
Due in one year or less	$ 10,412	$ 14,434
Due after one year through five years	13,406	13,866
Due after five years through ten years	9,490	9,056
Due after ten years	2,971	3,433
Mortgage-backed securities and collateralized mortgage obligations	10,950	11,796
Total	47,229	52,585
Fair Value
Due in one year or less	9,863	13,868
Due after one year through five years	12,646	13,185
Due after five years through ten years	8,231	7,986
Due after ten years	2,290	2,681
Mortgage-backed securities and collateralized mortgage obligations	10,001	10,915
Total	$ 43,031	$ 48,635