Commitments and Contingencies - Unfunded Loan Commitments and Standby Letters of Credit (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	$ 726,674	$ 503,265
Commercial lines of credit
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	338,497	287,988
Agricultural lines of credit
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	143,875	94,559
Undisbursed commercial real estate loans
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	131,867	82,420
Undisbursed construction loans
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	99,370	26,236
Undisbursed residential real estate loans
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	7,138	5,965
Undisbursed agricultural real estate loans
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	4,320	4,470
Other
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total commitments and standby letters of credit	$ 1,607	$ 1,627