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v3.23.2

Loans and Lease Finance Receivables and Allowance for Credit Losses - Additional Information (Detail) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) Loan | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2022 USD ($) Loan | Mar. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans pledged as collateral | $ 4,290,000,000 |  |  |  | $ 4,300,000,000 |
Net charge-offs | 150,000 |  |  |  |  |
Loans held-for-sale | 0 |  |  |  | 0 |
Impaired, at carrying value |  |  |  |  | 7,800,000 |
Allowance for Credit Losses | 87,000,000 |  |  |  | 85,100,000 |
Reserve for credit risk for undisbursed commitments | 8,900,000 |  |  |  | 8,000,000 |
Allocation of allowance to troubled debt restructuring |  | $ 0 |  |  | 0 |
Increase in reserve for unfunded loan commitments | 900,000 | $ 0 |  |  |  |
Allowance For Credit Losses Increase Decrease | 2,000,000 |  |  |  | $ 1,900,000 |
Allowance For Credit Losses Write Offs | $ 8,900,000 |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Loan |  | 0 |  |  | 0 |
GDP [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Increase Decrease In Macro Economic Factors | 1.50% |  |  |  |  |
GDP [Member] | Forecast [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Increase Decrease In Macro Economic Factors |  |  | 2.00% | 0.80% |  |
Unemployment [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Increase Decrease In Macro Economic Factors | 3.80% |  |  |  |  |
Unemployment [Member] | Forecast [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Increase Decrease In Macro Economic Factors |  |  | 5.00% | 5.00% |  |
Commercial Real Estate Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of total gross loan portfolio (excluding PCI loans) | 81.24% |  |  |  |  |
Notes receivable gross | $ 6,904,095,000 |  |  |  | $ 6,884,948,000 |
Construction [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of total gross loan portfolio (excluding PCI loans) | 77.51% |  |  |  |  |
Loans Secured by Dairy & Livestock Land [Member] | Agribusiness Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans classified as troubled debt restructured |  |  |  |  | 2,000,000 |
Performing Financing Receivable [Member] | Single-family Residential Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans classified as troubled debt restructured |  |  |  |  | 1,000,000 |
Performing Financing Receivable [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans classified as troubled debt restructured |  |  |  |  | 4,800,000 |
Loans, Excluding PCI Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross | $ 298,200,000 |  |  |  | 433,600,000 |
Loans, Excluding PCI Loans [Member] | Dairy & Livestock Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross | 252,500,000 |  |  |  | $ 388,500,000 |
Loans, Excluding PCI Loans [Member] | Agribusiness Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross | $ 45,700,000 |  |  |  |  | $ 45,100,000
Loans, Excluding PCI Loans [Member] | Loans Secured by Farmland [Member] | Commercial Real Estate Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of total gross loan portfolio (excluding PCI loans) | 7.50% |  |  |  | 7.52% |
Notes receivable gross | $ 517,600,000 |  |  |  | $ 517,800,000 |
Loans, Excluding PCI Loans [Member] | Loans Secured by Farmland [Member] | Agribusiness Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross | 381,800,000 |  |  |  |  |
Loans, Excluding PCI Loans [Member] | Loans Secured by Farmland [Member] | Loans Secured by Dairy & Livestock Land [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross | $ 135,800,000 |  |  |  | 140,500,000 |
Loans, Excluding PCI Loans [Member] | Loans Secured by Farmland [Member] | Loans Secured by Agricultural Land [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Notes receivable gross |  |  |  |  | $ 377,300,000 |
Maximum [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of total gross loan portfolio (excluding PCI loans) |  |  |  |  | 0.94% |
Minimum [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of total gross loan portfolio (excluding PCI loans) | 0.98% |  |  |  |  |

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