Loans and Leases, Interest Income Recognized on Average Recorded Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	$ 8,773	$ 10,785	$ 15,154
Interest Income Recognized	934	674	765
Real Estate [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	7,646	9,121	13,343
Interest Income Recognized	835	525	705
Commercial Real Estate [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	80	812	4,595
Interest Income Recognized	7	38	182
Agricultural [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	5,588	5,766	6,069
Interest Income Recognized	735	352	379
Residential and Home Equity [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	1,978	2,543	2,679
Interest Income Recognized	93	135	144
Construction [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Commercial and Industrial [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	232	500	1,562
Interest Income Recognized	20	34	54
Agricultural [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	585	907	195
Interest Income Recognized	58	102	6
Commercial Leases [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Consumer and Other [Member]
Loans and Leases Individually Evaluated [Abstract]
Average Recorded Investment	310	257	54
Interest Income Recognized	$ 21	$ 13	$ 0