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v3.23.2

Loans and Allowance for Credit Losses - Additional Information (Details) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) | Jun. 30, 2023 USD ($) Loan_modified Alternative | Dec. 31, 2022 USD ($) | Jun. 30, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Accrued interest on loans |  | $ 23,800,000 | $ 23,000,000 |
Minimum value of loans individually measured for impairment |  | $ 250,000,000 |  |
Number of alternatives for measuring impaired loans receivable | Alternative |  | 3 |  |
Interest lost on nonaccrual loans | $ 94,000 | $ 122,000 |  |
Modified loans balance |  |  | 5,064,000 | $ 0
Troubled debt restructurings balance | Loan_modified |  | 0 |  |
Real estate acquired through foreclosure |  | $ 3,978,000 | 4,261,000 |
Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Debt coverage ratio |  | 1.20x |  |
Commercial Real Estate | Minimum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Maximum loan-to-value ratio (in hundredths) |  | 65.00% |  |
Amortization period of loans |  | twenty |  |
Commercial Real Estate | Maximum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Maximum loan-to-value ratio (in hundredths) |  | 80.00% |  |
Amortization period of loans |  | twenty five years |  |
1-4 Family Residential Properties |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Period when loans charged-down |  | 180 days |  |
Motels and Hotels Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Gross loans |  | $ 215,200,000 |  |
Non-residential Buildings |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Gross loans |  | 991,100,000 |  |
Residential Buildings and Dwellings |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Gross loans |  | $ 473,700,000 |  |
Unsecured Open-end Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Period when loans charged-down |  | 180 days |  |
Other Secured Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Period when loans charged-down |  | 120 days |  |
Agricultural |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Gross loans |  | $ 540,500,000 | 577,200,000 |
Increase (decrease) in accounts and notes receivable |  | $ (36,600,000) |  |
Maximum loan-to-value ratio (in hundredths) |  | 65.00% |  |
Amortization period of loans |  | twenty-five years |  |
Loans receivable, time period |  | 1 year |  |
Agricultural | Corn and Other Grain Farming |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Gross loans |  | $ 417,600,000 | $ 445,200,000 |
Increase (decrease) in accounts and notes receivable |  | $ (27,700,000) |  |
Commercial and Industrial Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Maximum loan-to-value ratio (in hundredths) |  | 80.00% |  |
Amortization period of loans |  | seven years |  |
Loans receivable, time period |  | 1 year |  |
Residential Properties | Real Estate Loan |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Maximum loan-to-value ratio (in hundredths) |  | 80.00% |  |
Amortization period of loans |  | twenty-five years |  |

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- Definition The ratio used to analyze the amount of debt that can be supported by the cash flow generated from the property. The calculation is the net income generated by the property divided by the commercial mortgage payment. + References No definition available. + Details
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- Definition The amount of the mortgage loan as a percentage of the total appraised value of the real property. Loan-to-value is one of the key risk factors that lenders assess when qualifying borrowers for a mortgage. + References No definition available. + Details
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- Definition Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 + Details
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- Definition The increase (decrease) during the reporting period of the sum of amounts due within one year (or one business cycle) from customers for the credit sale of goods and services; and from note holders for outstanding loans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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