Loans And Allowance For Loan Losses (Additional Information About Impaired Loans Held) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 16,671	$ 17,457
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	21,293	27,370
Impaired Financing Receivable, with Related Allowance, Recorded Investment	63,716	47,857
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	77,371	56,768
Impaired Financing Receivable, Related Allowance	4,348	3,484
Impaired Financing Receivable, Recorded Investment	80,387	65,314
Impaired Financing Receivable, Unpaid Principal Balance	98,664	84,138
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	10,381	9,330
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	12,874	11,777
Impaired Financing Receivable, with Related Allowance, Recorded Investment	34,821	18,227
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	36,845	20,031
Impaired Financing Receivable, Related Allowance	2,328	1,119
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,335	2,961
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,307	8,956
Impaired Financing Receivable, with Related Allowance, Recorded Investment	546	1,227
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	6,962	2,804
Impaired Financing Receivable, Related Allowance	67	63
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,593	4,793
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,739	6,264
Impaired Financing Receivable, with Related Allowance, Recorded Investment	6,523	6,489
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	8,773	9,008
Impaired Financing Receivable, Related Allowance	568	745
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	362	373
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	373	373
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,377	7,667
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	10,291	10,530
Impaired Financing Receivable, Related Allowance	656	831
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,945	5,599
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,945	5,599
Impaired Financing Receivable, Related Allowance	119	63
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	541	704
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	592	852
Impaired Financing Receivable, Related Allowance	31	67
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,963	7,944
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	7,963	7,944
Impaired Financing Receivable, Related Allowance	$ 579	$ 596

Loans And Allowance For Loan Losses [Line Items]

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- Definition

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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