Income Taxes - Significant Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for loan losses	$ 4,658	$ 3,990
Interest on nonaccrual loans	666	338
Unrealized loss on available-for-sale securities		7
Amortization of intangible assets	74	88
Deferred rent payable	115
Depreciation of premises and equipment	8	30
Net operating losses	4,430	4,258
Charitable contribution carryforward	1,610	1,675
Compensation and benefits	668	182
Other	47	130
Total gross deferred tax assets	12,276	10,698
Deferred tax liabilities:
Cumulative contribution in excess of net periodic benefit costs, net		85
Deferred loan fees	847	638
Deferred gain on like-kind exchange	1,378
Unrealized loss on available-for-sale securities	34
Other	42	7
Total gross deferred tax liabilities	2,301	730
Valuation allowance	6,389	6,244
Net deferred tax assets	$ 3,586	$ 3,724