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Loans and Allowance for Credit Losses - Amortized Cost Basis of Collateral-Dependent Loans by Class of Loans Individually Evaluated (Details) $ in Thousands	Jun. 30, 2025 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 10,050
Allowance for Credit Losses	301
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,033
Allowance for Credit Losses	0
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,183
Allowance for Credit Losses	291
Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	2,194
Allowance for Credit Losses	0
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	5,640
Real Estate | Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	4,410
Business Assets | Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,033
Business Assets | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,183
Business Assets | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	2,194
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	5,640
Allowance for Credit Losses	10
Real Estate Loan | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	575
Allowance for Credit Losses	0
Real Estate Loan | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	4,511
Allowance for Credit Losses	6
Real Estate Loan | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	5,640
Real Estate Loan | Real Estate | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	575
Real Estate Loan | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	4,511
Real Estate Loan | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Business Assets | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Business Assets | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
1-4 Family | Real Estate Loan | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	157
Allowance for Credit Losses	4
1-4 Family | Real Estate Loan | Real Estate | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	157
1-4 Family | Real Estate Loan | Business Assets | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Multifamily | Real Estate Loan | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	397
Allowance for Credit Losses	0
Multifamily | Real Estate Loan | Real Estate | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	397
Multifamily | Real Estate Loan | Business Assets | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 0

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