Loans and Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.05%	0.05%
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.04%	0.05%
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.00%	0.00%
Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.00%	0.01%
Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.02%	0.01%
Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.02%	0.03%
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.01%	0.00%
Payment Delay Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	$ 1,580	$ 1,339
Payment Delay Investment | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	872	1,201
Payment Delay Investment | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	2
Payment Delay Investment | Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	288	309
Payment Delay Investment | Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	9	45
Payment Delay Investment | Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	575	847
Payment Delay Investment | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	708	136
Term Extension Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1,162	1,046
Term Extension Modifications | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1,085	946
Term Extension Modifications | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	4	8
Term Extension Modifications | Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	0
Term Extension Modifications | Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1,085	758
Term Extension Modifications | Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	188
Term Extension Modifications | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	73	92
Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	505	472
Interest Rate Reduction | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	505	472
Interest Rate Reduction | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	0
Interest Rate Reduction | Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	0
Interest Rate Reduction | Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	0
Interest Rate Reduction | Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	505	472
Interest Rate Reduction | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	$ 0	$ 0