Loans (Loans Purchased and/or Sold During the Year) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	$ 0	$ 2,051
Sales	3,128	0
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	2,051
Sales	0	0
Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	3,128	0
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	0	0
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	0	0
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	0	0
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	0	0
Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	0	0
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	0
Sales	$ 0	$ 0