Allowance for Credit Losses (Summary of Loans Restructured and Subsequently Defaulted Under the Restructured Terms) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($) contract
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	64	124	176
TDRs, balance \| $	$ 13,869	$ 45,872	$ 53,565
Payment Deferral
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	6	27	27
TDRs, balance \| $	$ 2,591	$ 19,218	$ 28,566
Residential real estate and other
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	43	85	145
TDRs, balance \| $	$ 5,851	$ 14,229	$ 20,206
Residential real estate and other \| Payment Deferral
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	2	8	12
TDRs, balance \| $	$ 116	$ 834	$ 5,126
Non-construction \| Commercial real estate
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	5	18	7
TDRs, balance \| $	$ 2,944	$ 19,281	$ 7,018
Non-construction \| Commercial real estate \| Payment Deferral
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	3	12	3
TDRs, balance \| $	$ 2,276	$ 14,343	$ 865
Commercial, Industrial, And Other Loans \| Commercial, industrial and other
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	16	21	24
TDRs, balance \| $	$ 5,074	$ 12,362	$ 26,341
Commercial, Industrial, And Other Loans \| Commercial, industrial and other \| Payment Deferral
Financing Receivables, Modifications [Line Items]
TDRs, count \| contract	1	7	12
TDRs, balance \| $	$ 199	$ 4,041	$ 22,575

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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