Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 74,478	$ 46,760	$ 74,478	$ 46,760	$ 48,144
Average recorded investment	57,236	54,679	52,490	52,015
Interest income recognized	412	485	1,142	1,292
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	31,485	16,026	31,485	16,026
Average recorded investment	23,468	23,247	18,368	22,686
Interest income recognized	107	187	244	506
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	1,868	2,016	1,868	2,016
Average recorded investment	1,922	2,246	2,176	1,661
Interest income recognized	1	4	23	31
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,238	2,913	2,238	2,913
Average recorded investment	1,977	2,758	2,198	6,086
Interest income recognized	27	26	72	84
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	38,799	25,805	38,799	25,805
Average recorded investment	29,779	26,428	29,712	21,582
Interest income recognized	277	$ 268	803	$ 671
Finance Leases Portfolio Segment [Member] \| Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	88		88
Average recorded investment	$ 90		$ 36

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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=118936363&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=118936363&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.

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+ 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=118936363&loc=SL6953550-111524

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