Loans And Allowance For Loan Losses (Additional Information About Impaired Loans Held) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 23,375	$ 25,564
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	35,330	38,222
Impaired Financing Receivable, with Related Allowance, Recorded Investment	82,042	91,354
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	95,442	109,791
Impaired Financing Receivable, Related Allowance	9,836	7,485
Impaired Financing Receivable, Recorded Investment	105,417	116,918
Impaired Financing Receivable, Unpaid Principal Balance	130,772	148,013
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,969	9,964
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	9,000	12,697
Impaired Financing Receivable, with Related Allowance, Recorded Investment	20,185	19,358
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	23,609	22,513
Impaired Financing Receivable, Related Allowance	3,054	1,888
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	8,763	8,440
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	16,862	15,102
Impaired Financing Receivable, with Related Allowance, Recorded Investment	22,395	20,446
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	24,007	25,808
Impaired Financing Receivable, Related Allowance	2,459	1,762
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,040	5,484
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	8,802	8,200
Impaired Financing Receivable, with Related Allowance, Recorded Investment	11,159	17,115
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	16,871	23,888
Impaired Financing Receivable, Related Allowance	2,035	1,784
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	603	1,166
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	666	1,380
Impaired Financing Receivable, with Related Allowance, Recorded Investment	10,032	14,157
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	12,684	17,304
Impaired Financing Receivable, Related Allowance	1,183	857
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,418	4,779
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,418	4,779
Impaired Financing Receivable, Related Allowance	86	93
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	510
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	843
Impaired Financing Receivable, with Related Allowance, Recorded Investment	717	779
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	717	779
Impaired Financing Receivable, Related Allowance	14	18
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	13,136	14,720
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13,136	14,720
Impaired Financing Receivable, Related Allowance	$ 1,005	$ 1,083