Loans and Leases (Details)	6 Months Ended
	Jun. 30, 2025 USD ($) Loan Borrower	Dec. 31, 2024 USD ($)
Loans and Leases [Abstract]
Remaining borrowing capacity	$ 2,100,000,000	$ 2,100,000,000
Unfunded loan commitments	$ 0
Number of loans modified (in Loan) | Loan	1
Past due period for loan to be considered in default	90 days
Loans that were modified within last 12 months that had payment default	$ 176,000
Past due period for loan modified to be considered in default	86 days
Collateral dependent loans and leases, amortized cost	$ 0	929,000
Agricultural Real Estate [Member]
Loans and Leases [Abstract]
Number of loans modified (in Loan) | Loan	4
Agricultural [Member]
Loans and Leases [Abstract]
Number of real estate borrowers (in Borrower) | Borrower	1
Number of loan, contractual term extended (in Loan) | Loan	2
Number of loans, modified, had payment deferral (in Loan) | Loan	3
Residential and Home Equity [Member]
Loans and Leases [Abstract]
Number of loans modified (in Loan) | Loan	1
Maturity extension and re-amortization term	10 years
Collateral dependent loans and leases, amortized cost		$ 0
Federal Home Loan Bank [Member]
Loans and Leases [Abstract]
Collateral amount	$ 1,300,000,000
Remaining borrowing capacity	811,800,000
Federal Reserve Bank [Member]
Loans and Leases [Abstract]
Collateral amount	1,400,000,000
Remaining borrowing capacity	$ 1,100,000,000
Extended Maturity [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Contractual term extended	6 months
Payment Deferral [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Principal and interest deferrals period	6 months