Investment Securities - Contractual Maturities of Investment Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Available-for-sale, Amortized Cost
Due in one year or less	$ 14,322
Due after one year through five years	54,845
Due after five years through ten years	56,992
Due after ten years	64,626
Total Available-for-sale Securities	190,785
Available-for-sale, Fair Value
Due in one year or less	14,055
Due after one year through five years	51,453
Due after five years through ten years	51,886
Due after ten years	51,690
Total Available-for-sale Securities	$ 169,084
Weighted average remaining life	3 years 2 months 12 days	3 years 9 months 18 days