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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes
Federal corporate income tax rate	21.00%	21.00%	21.00%
Deferred tax asset
Allowance for loan losses and OREO losses	$ 9,743	$ 8,227
Nonqualified defined contribution plan	3,595	3,247
Lease liabilities	1,906	667
Fair value adjustments related to acquisition	1,716	1,053
Share-based compensation	920	863
Reserve for indemnification losses	879	645
Accrued expenses	779	426
Cash flow hedges	471	24
Other	1,364	1,359
Deferred tax asset	21,373	16,511
Deferred tax liability
Goodwill and other intangible assets	(3,164)	(2,818)
Right of use assets	(1,868)	(664)
Depreciation	(1,272)	(972)
Net unrealized gain on securities available for sale	(1,169)	(415)
Defined benefit plan	(345)	(423)
Deferred tax liability	(7,818)	(5,292)
Net deferred tax asset	$ 13,555	$ 11,219

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