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	Dec. 31, 2022	Dec. 31, 2021
Loan portfolio past due loans
Nonaccrual	$ 26,571	$ 524
Total Loans Greater than 90 Days & Accruing	112	237
Residential real estate
Loan portfolio past due loans
Nonaccrual	245	362
Total Loans Greater than 90 Days & Accruing	96	22
Healthcare financing
Loan portfolio past due loans
Nonaccrual	21,783
Commercial and commercial real estate
Loan portfolio past due loans
Nonaccrual	4,390
Total Loans Greater than 90 Days & Accruing		149
Agricultural production and real estate
Loan portfolio past due loans
Nonaccrual	147	158
Total Loans Greater than 90 Days & Accruing		30
Consumer and margin loans
Loan portfolio past due loans
Nonaccrual	6	4
Total Loans Greater than 90 Days & Accruing	$ 16	$ 36