Loans and Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.07%	0.06%
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.04%	0.04%
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%	0.02%
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Class of Financing Receivable	0.03%	0.02%
Payment Delay Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	$ 1,246	$ 1,959
Payment Delay Investment \| Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	828	1,128
Payment Delay Investment \| Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	0
Payment Delay Investment \| Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	275	296
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	7	40
Payment Delay Investment \| Commercial Real Estate \| Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	546	792
Payment Delay Investment \| Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	418	831
Term Extension Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	2,946	953
Term Extension Modifications \| Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1,038	866
Term Extension Modifications \| Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1	6
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	1,038	736
Term Extension Modifications \| Commercial Real Estate \| Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	0	130
Term Extension Modifications \| Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	1,907	81
Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	505	505
Interest Rate Reduction \| Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	505	505
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	505
Interest Rate Reduction \| Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Balance	$ 0	$ 0

Loans and Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified (Details) - USD ($)
$ in Thousands