Loans and Allowance for Credit Losses Schedule of Allowance for Credit Losses by Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	$ 0		$ 0
Allowance for credit losses, collectively evaluated for credit losses	30,536		30,525
Allowance for credit losses	30,536	$ 30,530	30,525	$ 30,515	$ 30,539	$ 30,432
Commercial [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	5,104		5,700
Allowance for credit losses	5,104	5,257	5,700	5,651	5,644	5,489
Construction, land and land development [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	2,544		3,744
Allowance for credit losses	2,544	2,910	3,744	3,943	4,098	4,354
1-4 family residential first mortgages [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	999		687
Allowance for credit losses	999	1,029	687	658	623	650
Home equity [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	271		274
Allowance for credit losses	271	269	274	274	241	200
Commercial real estate [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	21,325		19,795
Allowance for credit losses	21,325	20,764	19,795	19,683	19,653	19,544
Consumer and other [Member]
Loans, Allowance for Loan Losses [Line Items]
Allowance for credit losses, individually evaluated for credit losses	0		0
Allowance for credit losses, collectively evaluated for credit losses	293		325
Allowance for credit losses	$ 293	$ 301	$ 325	$ 306	$ 280	$ 195