Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale, by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost [Abstract]
Due in one year or less	$ 1,007
Due after one year through five years	14,321
Due after five years through ten years	10,121
Due after ten years	52,695
Amortized cost	78,144	$ 72,958
Fair Value [Abstract]
Due in one year or less	1,007
Due after one year through five years	14,534
Due after five years through ten years	10,340
Due after ten years	53,902
Total fair value	$ 79,783	$ 71,884