Loans and Allowance For Credit Losses Loans (Schedule of Defaults During Stated Period Of Trouble Debt Restructurings) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) loan	Mar. 31, 2020 USD ($) loan
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| loan	2	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 447	$ 361
Commercial real estate owner occupied other [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| loan	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 361
Residential 1-4 family real estate personal residence [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| loan	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 48	$ 0
Residential 1-4 family real estate rental - small loan [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| loan	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 399	$ 0

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

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