Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Allowance for loan losses	$ 2,841	$ 2,868
Nonaccrual loan interest	490	460
Other real estate owned valuation allowance	120	69
Deferred compensation	1,184	832
Net unrealized losses on securities	0	1,147
Acquisition accounting adjustments	3,670	734
Accrued pension liability	50	36
NOL Carryforward	456	0
Net unrealized loss on cash flow hedges	573	180
Other	601	420
Total deferred tax assets	9,985	6,746
Deferred tax liabilities:
Depreciation	1,079	759
Accretion of discounts on securities	0	24
Core deposit intangibles	1,669	208
Net unrealized gains on securities	799	0
Other	574	238
Total deferred tax liabilities	4,121	1,229
Net deferred tax assets	$ 5,864	$ 5,517