Loans and Allowance for Credit Losses on Loans - Non Accrual Loans and Loans Past Due 90 Days Or More and Still Accruing (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Loan portfolio past due loans
Nonaccrual	$ 4,813	$ 524
Total Loans Greater than 90 Days & Accruing		237
Residential real estate
Loan portfolio past due loans
Nonaccrual	347	362
Total Loans Greater than 90 Days & Accruing		22
Commercial and commercial real estate
Loan portfolio past due loans
Nonaccrual	4,305
Total Loans Greater than 90 Days & Accruing		149
Agricultural production and real estate
Loan portfolio past due loans
Nonaccrual	158	158
Total Loans Greater than 90 Days & Accruing		30
Consumer and margin loans
Loan portfolio past due loans
Nonaccrual	$ 3	4
Total Loans Greater than 90 Days & Accruing		$ 36