Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Non-accrual loans and leases	$ 125,098	$ 128,572
Loans and leases 90 days or more past due and still accruing	16,057	11,106
Total non-performing loans and leases	141,155	139,678
OREO	6,831	10,518
Total non-performing assets	$ 147,986	$ 150,196