Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 4,120	$ 10,451
Nonaccrual and accruing restructured loans	117,683	154,025
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	76,231	112,315
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	41,452	41,710
Partial Charge-Offs On Impaired Loans	44,574	63,272
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	23,243	20,740
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	23,186	20,727
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	57	13
Construction Real Estate - SEPH Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,097	4,777
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	2,097	4,777
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	5,970	10,782
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	5,970	10,782
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Construction Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	171	184
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	171	184
Construction Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	173	231
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	173	231
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	23,640	33,408
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	23,640	33,408
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Residential Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	31,381	32,272
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	31,381	32,272
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,497	2,880
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,497	2,880
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,707	1,850
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,707	1,850
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	252	5,496
Nonaccrual and accruing restructured loans	21,303	41,822
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	21,303	41,822
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	35	0
Nonaccrual and accruing restructured loans	4,501	5,079
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	35	799
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	4,466	4,280
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Partial Charge-Offs On Impaired Loans	$ 40,400	$ 58,100