Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for loan losses	$ 3,238	$ 5,364
Deferred loan fees	274	3,358
Discount on loans sold	934	1,396
Operating lease liabilities	1,143	995
Accrued bonuses	534	454
Other	962	598
Total gross deferred tax assets	7,085	12,165
Deferred tax liabilities:
Mortgage banking fair value adjustments	(1,074)	(2,861)
SBA loan servicing rights	(1,542)	(2,068)
Deferred loan costs	(2,193)	(1,884)
Right-of-use operating lease assets	(1,094)	(947)
Depreciation	(693)	(597)
Other	(35)	0
Total gross deferred tax liabilities	(6,631)	(8,357)
Net deferred tax asset	$ 454	$ 3,808