Loans and Allowance for Loan Losses - Allocation of ALL with Corresponding Percentage of Loans in Each Category to Total Loans, Net of Deferred Fee (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 21,698	$ 23,245	$ 12,604	$ 12,113
Allowance for loan and lease losses, Percentage of total loans	1.10%	1.23%
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 7,124	$ 7,349	3,599	3,309
Allowance for loan and lease losses, Percentage of total loans	0.36%	0.39%
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 2,412	$ 1,831	1,231	1,005
Allowance for loan and lease losses, Percentage of total loans	0.12%	0.10%
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 3,769	$ 3,476	2,058	2,431
Allowance for loan and lease losses, Percentage of total loans	0.19%	0.18%
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 7,441	$ 9,708	5,074	5,036
Allowance for loan and lease losses, Percentage of total loans	0.38%	0.51%
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 397	$ 305	222	105
Allowance for loan and lease losses, Percentage of total loans	0.02%	0.02%
Other
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 555	$ 576	$ 420	$ 227
Allowance for loan and lease losses, Percentage of total loans	0.03%	0.03%