Income Taxes - Summary of Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Loans and allowance for loan losses	$ 2,778	$ 1,937
Accrued expenses	347	219
Deferred compensation	658	600
Unrealized (gains) losses on investment securities available- for-sale	(607)	1,062
Other	597	485
Total deferred tax assets	3,773	4,303
Deferred tax liabilities:
Core deposit intangible	(1,334)	(1,400)
Depreciation	(1,738)	(1,717)
Other	76	(5)
Total deferred tax liabilities	(2,996)	(3,122)
Net deferred income tax assets	$ 777	$ 1,181