Loans and Allowance for Credit Losses (Details) - Schedule of Corporation’s Loan Portfolio by Category of Loans $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	$ 1,293,965
Deferred loan costs, net	2,537
Allowance for credit losses	(16,833)
Total net loans (b)	1,279,669	[1]
Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	245,971
Business Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	350,740
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	6,310
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	102,108
Non-Owner Occupied Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	125,894
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans prior to deferred fees	$ 462,942	[2]

[1] Refer to Note 1, Accounting Pronouncements Adopted in 2023 for details of reclassification of the portfolio segments related to the adoption of ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.

[2] Real estate loans serviced for others, which are not included in the Consolidated Balance Sheets, totaled $295,406,000 as of June 30, 2023.