Loans and Allowance for Credit Losses - Financial Effect of Loan Modification (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years	4 years 4 months 24 days	0 years	4 years 4 months 24 days	0 years
Commercial and financial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years	1 year	10 months 24 days	4 years 1 month 6 days	1 year
Construction, 1 to 4 family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years			3 months 18 days	9 months 18 days
Construction, land development and commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years			0 years	10 months 24 days
Mortgage, farmland
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years	7 years	0 years	6 years 10 months 24 days	0 years
Mortgage, 1 to 4 family first liens
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years	5 years 2 months 12 days	7 months 6 days	5 years 2 months 12 days	7 months 6 days
Mortgage, commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financial effect, weighted average years	3 years	0 years	3 years	0 years