Allowance for Credit Losses (Summary of Loans Restructured and Subsequently Defaulted Under the Restructured Terms) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) contract	Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	40	64	124
TDRs, balance | $	$ 13,377	$ 13,869	$ 45,872
Extension at Below Market Terms
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	36	51	102
TDRs, balance | $	$ 5,558	$ 8,931	$ 36,467
Reduction of Interest Rate
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	22	20	42
TDRs, balance | $	$ 4,265	$ 5,079	$ 7,721
Modification To Interest-only Payments
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	5	10	15
TDRs, balance | $	$ 9,081	$ 4,340	$ 10,479
Forgiveness of Debt
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	0	1
TDRs, balance | $	$ 0	$ 0	$ 432
Payments in Default
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	5	6	27
TDRs, balance | $	$ 709	$ 2,591	$ 19,218
Commercial, industrial and other | Commercial, industrial and other
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	5	16	21
TDRs, balance | $	$ 468	$ 5,074	$ 12,362
Commercial, industrial and other | Commercial, industrial and other | Extension at Below Market Terms
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	4	7	17
TDRs, balance | $	$ 305	$ 847	$ 8,089
Commercial, industrial and other | Commercial, industrial and other | Reduction of Interest Rate
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	1	1	1
TDRs, balance | $	$ 85	$ 300	$ 991
Commercial, industrial and other | Commercial, industrial and other | Modification To Interest-only Payments
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	2	0	6
TDRs, balance | $	$ 248	$ 0	$ 4,436
Commercial, industrial and other | Commercial, industrial and other | Forgiveness of Debt
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	0	1
TDRs, balance | $	$ 0	$ 0	$ 432
Commercial, industrial and other | Commercial, industrial and other | Payments in Default
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	2	1	7
TDRs, balance | $	$ 185	$ 199	$ 4,041
Commercial real estate | Non-construction
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	3	5	18
TDRs, balance | $	$ 8,833	$ 2,944	$ 19,281
Commercial real estate | Non-construction | Extension at Below Market Terms
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	1	4	15
TDRs, balance | $	$ 1,178	$ 2,401	$ 14,657
Commercial real estate | Non-construction | Reduction of Interest Rate
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	1	2	3
TDRs, balance | $	$ 1,178	$ 656	$ 921
Commercial real estate | Non-construction | Modification To Interest-only Payments
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	3	1	8
TDRs, balance | $	$ 8,833	$ 113	$ 5,853
Commercial real estate | Non-construction | Forgiveness of Debt
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	0	0
TDRs, balance | $	$ 0	$ 0	$ 0
Commercial real estate | Non-construction | Payments in Default
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	3	12
TDRs, balance | $	$ 0	$ 2,276	$ 14,343
Residential real estate and other
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	32	43	85
TDRs, balance | $	$ 4,076	$ 5,851	$ 14,229
Residential real estate and other | Extension at Below Market Terms
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	31	40	70
TDRs, balance | $	$ 4,075	$ 5,683	$ 13,721
Residential real estate and other | Reduction of Interest Rate
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	20	17	38
TDRs, balance | $	$ 3,002	$ 4,123	$ 5,809
Residential real estate and other | Modification To Interest-only Payments
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	9	1
TDRs, balance | $	$ 0	$ 4,227	$ 190
Residential real estate and other | Forgiveness of Debt
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	0	0	0
TDRs, balance | $	$ 0	$ 0	$ 0
Residential real estate and other | Payments in Default
Financing Receivables, Modifications [Line Items]
TDRs, count | contract	3	2	8
TDRs, balance | $	$ 524	$ 116	$ 834