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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 91,783	$ 50,255	$ 91,783	$ 50,255	$ 77,491
Average recorded investment	85,857	50,677	82,279	49,457
Interest income recognized	671	380	1,383	730
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	30,183	19,586	30,183	19,586
Average recorded investment	29,859	16,136	30,931	15,628
Interest income recognized	180	90	384	137
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	631	2,243	631	2,243
Average recorded investment	493	2,559	460	2,330
Interest income recognized	4	10	8	22
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,257	1,874	5,257	1,874
Average recorded investment	5,400	1,909	3,960	2,277
Interest income recognized	78	25	101	45
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	54,071	26,461	54,071	26,461
Average recorded investment	49,599	30,050	46,582	29,209
Interest income recognized	409	255	890	526
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	1,641	91	1,641	91
Average recorded investment	$ 506	$ 23	$ 346	$ 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=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.

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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=121611835&loc=SL6953550-111524

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