Income Taxes - Income taxes included in balance sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
Allowance for credit losses and unfunded commitments	$ 1,841	$ 1,169
Net operating loss carryforward	275	1,949
Accumulated amortization on intangibles	28	36
Impairment loss on investment securities		27
Net losses on other real estate owned	1,132	1,146
Stock option expense	108	25
Discounts on acquired loans	1,539	354
Other real estate owned valuation	406	432
Other	181	21
Deferred tax assets, gross	5,510	5,159
Valuation allowance	(275)
Deferred tax assets, net	5,235	5,159
Deferred tax liabilities:
Accumulated depreciation	72	170
Accumulated amortization on core deposit intangible	840	286
Deferred gain	134	136
Net depreciation on securities available for sale	249	(263)
Purchase discounts	36
Accumulated securities discount accretion	65	1
Deferred tax liabilities	1,396	330
Net deferred income tax asset	$ 3,839	$ 4,829