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Loans and Allowance for Credit Losses - Loans Modified as Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Modification	Dec. 31, 2020 USD ($) Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	10	11
Financing Receivables, Modifications during Period, Balance | $	$ 1,434	$ 6,031
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	3	6
Financing Receivables, Modifications during Period, Balance | $	$ 1,107	$ 3,709
Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	2
Financing Receivables, Modifications during Period, Balance | $	$ 183	$ 87
Agricultural | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	0
Financing Receivables, Modifications during Period, Balance | $	$ 245	$ 0
Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	4
Financing Receivables, Modifications during Period, Balance | $	$ 679	$ 3,622
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	2	4
Financing Receivables, Modifications during Period, Balance | $	$ 254	$ 2,314
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	4	1
Financing Receivables, Modifications during Period, Balance | $	$ 50	$ 8
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	0
Financing Receivables, Modifications during Period, Balance | $	$ 23	$ 0

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