Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Non-accrual loans	$ 143,666	$ 137,198
Loans 90 days or more past due and still accruing	8,453	9,929
Total non-performing loans	152,119	147,127
OREO	1,817	4,178
Total non-performing assets	153,936	$ 151,305
Mortgage loans in process of foreclosure	$ 6,400