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	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 21,684	$ 20,857	$ 21,698	$ 22,754	$ 23,877	$ 23,245
Allowance for loan and lease losses, Percentage of total loans	0.96%		1.10%
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 7,149	6,987	$ 7,124	7,915	7,688	7,349
Allowance for loan and lease losses, Percentage of total loans	0.32%		0.36%
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 2,555	2,214	$ 2,412	1,730	1,679	1,831
Allowance for loan and lease losses, Percentage of total loans	0.11%		0.12%
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 3,271	3,308	$ 3,769	3,871	3,363	3,476
Allowance for loan and lease losses, Percentage of total loans	0.15%		0.19%
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 7,464	7,206	$ 7,441	8,401	10,212	9,708
Allowance for loan and lease losses, Percentage of total loans	0.33%		0.38%
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and leases losses, Amount	$ 498	381	$ 397	356	333	305
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 leases losses, Amount	$ 747	$ 761	$ 555	$ 481	$ 602	$ 576
Allowance for loan and lease losses, Percentage of total loans	0.03%		0.03%