Income Taxes - Tax Effects of Temporary Differences Related to Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets
Allowance for loan losses	$ 14,051	$ 18,124
Lease incentive	508	564
Impairment of available-for-sale securities	508	564
Loan fees	3,227	3,178
Accrued expenses	2,735	2,128
Deferred compensation	2,418	2,474
State tax credit	1,033	2,621
Other	2,057	946
Total deferred tax asset	26,029	30,035
Deferred tax liability
Net unrealized gain on securities available-for-sale	6,967	9,531
FHLB stock basis	757	1,209
Premises and equipment	(2,602)	(2,881)
Other	1,229	1,601
Total deferred tax liability	(11,555)	(15,222)
Net deferred tax asset	$ 14,474	$ 14,813