Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 50,255	$ 61,750	$ 50,255	$ 61,750	$ 48,144
Average recorded investment	50,677	52,511	49,457	51,883
Interest income recognized	380	386	730	807
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	19,586	29,943	19,586	29,943
Average recorded investment	16,136	27,637	15,628	23,402
Interest income recognized	90	145	137	319
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,243	2,529	2,243	2,529
Average recorded investment	2,559	1,510	2,330	1,451
Interest income recognized	10	13	22	27
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	1,874	2,750	1,874	2,750
Average recorded investment	1,909	2,653	2,277	7,511
Interest income recognized	25	27	45	58
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	26,461	26,528	26,461	26,528
Average recorded investment	30,050	20,711	29,209	19,519
Interest income recognized	255	$ 201	526	$ 403
Finance Leases Portfolio Segment [Member] \| Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	91		91
Average recorded investment	$ 23		$ 13

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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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