v3.26.1
Fair Value - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Details) - Collateral Dependent Loans - Nonrecurring - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Commercial and Industrial Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets $ 12,482 $ 14,914
Commercial Real Estate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 19,455 23,698
Agricultural Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 1,397 2,544
Consumer Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Home Equity Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 331 330
Residential Mortgage Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 236 366
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and Industrial Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Real Estate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agricultural Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Home Equity Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential Mortgage Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Commercial and Industrial Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Commercial Real Estate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Agricultural Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Consumer Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Home Equity Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Other Observable Inputs (Level 2) | Residential Mortgage Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Unobservable  Inputs (Level 3) | Commercial and Industrial Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 12,482 14,914
Significant Unobservable  Inputs (Level 3) | Commercial Real Estate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 19,455 23,698
Significant Unobservable  Inputs (Level 3) | Agricultural Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 1,397 2,544
Significant Unobservable  Inputs (Level 3) | Consumer Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 0 0
Significant Unobservable  Inputs (Level 3) | Home Equity Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets 331 330
Significant Unobservable  Inputs (Level 3) | Residential Mortgage Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value assets $ 236 $ 366