Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	96	142	83
Post-Modification Recorded Investment | $	$ 33,479	$ 45,283	$ 10,599
Real estate - commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	9	12	2
Post-Modification Recorded Investment | $	$ 16,020	$ 24,868	$ 263
Commercial - secured
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	10	20	16
Post-Modification Recorded Investment | $	$ 2,823	$ 5,218	$ 5,378
Real estate - residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	46	48	6
Post-Modification Recorded Investment | $	$ 13,256	$ 10,493	$ 2,252
Real estate - home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	30	48	59
Post-Modification Recorded Investment | $	$ 1,226	$ 4,359	$ 2,706
Real estate - construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	1	0	0
Post-Modification Recorded Investment | $	$ 154	$ 0	$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified during the year (loans) | loan	0	14	0
Post-Modification Recorded Investment | $	$ 0	$ 345	$ 0