Loans (Schedule of Recorded Investment in Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Non-Accrual	$ 13,802	$ 12,579
Loans Past Due 90 Days or More & Still Accruing	190	642
Commercial and Industrial Loans and Leases
Financing Receivable, Past Due [Line Items]
Non-Accrual	4,940	2,430
Loans Past Due 90 Days or More & Still Accruing	190	0
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual	3,433	6,833
Loans Past Due 90 Days or More & Still Accruing	0	368
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual	2,739	1,449
Loans Past Due 90 Days or More & Still Accruing	0	274
Home Equity Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual	79	88
Loans Past Due 90 Days or More & Still Accruing	0	0
Consumer Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual	115	162
Loans Past Due 90 Days or More & Still Accruing	0	0
Residential Mortgage Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual	2,496	1,617
Loans Past Due 90 Days or More & Still Accruing	0	0
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Past Due [Line Items]
Non-Accrual	5,393	4,162
Loans Past Due 90 Days or More & Still Accruing	0	141
Loans Acquired with Deteriorated Credit Quality | Loans Acquired in Current Year
Financing Receivable, Past Due [Line Items]
Non-Accrual	2,058	4,603
Loans Past Due 90 Days or More & Still Accruing	$ 0	$ 96