Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 85,851	$ 50,907	$ 77,491
Average recorded investment	79,595	48,602
Interest income recognized	712	350
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	29,542	14,844
Average recorded investment	31,657	14,924
Interest income recognized	204	47
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	452	2,879
Average recorded investment	424	2,239
Interest income recognized	4	12
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,581	2,046
Average recorded investment	2,925	2,588
Interest income recognized	23	20
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	50,147	31,138
Average recorded investment	44,457	28,851
Interest income recognized	481	$ 271
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	129
Average recorded investment	$ 132

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524

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Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524

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