Loans (Aging Of Recorded Investment In Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014 contracts		Jun. 30, 2013 contracts	Jun. 30, 2014 contracts		Jun. 30, 2013 contracts	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	119		151	211		261
Accruing loans past due 30-89 days	$ 32,118			$ 32,118			$ 31,815
Past due nonaccrual loans and loans past due 90 days or more and accruing	72,896	[1]		72,896	[1]		61,610	[2]
Total loans past due	105,014			105,014			93,425
Total current	4,643,584			4,643,584			4,540,574
Recorded Investment	4,748,598			4,748,598			4,633,999
Loans past due 90 days or more and accruing	6,556			6,556			1,727
Financing Receivable, Modifications, Recorded Investment, During Period	2,892		5,242	4,153		9,155
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	5		7	10		14
Accruing loans past due 30-89 days	1,147			1,147			1,233
Past due nonaccrual loans and loans past due 90 days or more and accruing	14,244	[1]		14,244	[1]		13,275	[2]
Total loans past due	15,391			15,391			14,508
Total current	805,443			805,443			814,003
Loans past due 90 days or more and accruing	3,988			3,988			80
Financing Receivable, Modifications, Recorded Investment, During Period	294		262	352		496
Construction Real Estate - SEPH Commercial Land And Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	688			688
Past due nonaccrual loans and loans past due 90 days or more and accruing	3,873	[1]		3,873	[1]		4,242	[2]
Total loans past due	4,561			4,561			4,242
Total current	645			645			1,606
Recorded Investment	5,206	[3]		5,206	[3]		5,848	[3]
Loans past due 90 days or more and accruing	0			0			0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	2		1	2		2
Accruing loans past due 30-89 days	3,438			3,438
Past due nonaccrual loans and loans past due 90 days or more and accruing	3,146	[1]		3,146	[1]		3,463	[2]
Total loans past due	6,584			6,584			3,463
Total current	105,742			105,742			107,642
Recorded Investment	112,326			112,326			111,105
Loans past due 90 days or more and accruing	0			0			0
Financing Receivable, Modifications, Recorded Investment, During Period	549		180	208		217
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		0	0		0
Accruing loans past due 30-89 days	270			270			264
Past due nonaccrual loans and loans past due 90 days or more and accruing	90	[1]		90	[1]		75	[2]
Total loans past due	360			360			339
Total current	29,940			29,940			31,639
Recorded Investment	30,300			30,300			31,978
Loans past due 90 days or more and accruing	0			0			0
Financing Receivable, Modifications, Recorded Investment, During Period
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	1		0	1		2
Accruing loans past due 30-89 days	68			68			207
Past due nonaccrual loans and loans past due 90 days or more and accruing	12	[1]		12	[1]		14	[2]
Total loans past due	80			80			221
Total current	7,480			7,480			7,351
Recorded Investment	7,560			7,560			7,572
Loans past due 90 days or more and accruing	2			2			0
Financing Receivable, Modifications, Recorded Investment, During Period	3			3		25
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		8	2		14
Accruing loans past due 30-89 days	701			701			900
Past due nonaccrual loans and loans past due 90 days or more and accruing	20,002	[1]		20,002	[1]		5,659	[2]
Total loans past due	20,703			20,703			6,559
Total current	391,730			391,730			401,732
Recorded Investment	412,433			412,433			408,291
Loans past due 90 days or more and accruing	0			0
Financing Receivable, Modifications, Recorded Investment, During Period			1,007	48		2,958
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	13		21	20		33
Accruing loans past due 30-89 days	13,029			13,029			13,633
Past due nonaccrual loans and loans past due 90 days or more and accruing	11,108	[1]		11,108	[1]		11,829	[2]
Total loans past due	24,137			24,137			25,462
Total current	1,150,381			1,150,381			1,120,851
Recorded Investment	1,174,518			1,174,518			1,146,313
Loans past due 90 days or more and accruing	1,448			1,448			549
Financing Receivable, Modifications, Recorded Investment, During Period	732		1,614	1,321		2,731
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	5		3	5		7
Accruing loans past due 30-89 days	483			483			571
Past due nonaccrual loans and loans past due 90 days or more and accruing	418	[1]		418	[1]		402	[2]
Total loans past due	901			901			973
Total current	213,888			213,888			213,462
Recorded Investment	214,789			214,789			214,435
Loans past due 90 days or more and accruing	37			37			0
Financing Receivable, Modifications, Recorded Investment, During Period	276		28	276		91
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	554			554			696
Past due nonaccrual loans and loans past due 90 days or more and accruing	484	[1]		484	[1]		436	[2]
Total loans past due	1,038			1,038			1,132
Total current	28,996			28,996			32,841
Recorded Investment	30,034			30,034			33,973
Loans past due 90 days or more and accruing	61			61			80
Financing Receivable, Modifications, Recorded Investment, During Period	97		59	98		105
SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		0	0		0
Financing Receivable, Modifications, Recorded Investment, During Period
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	820,834	[3]		820,834	[3]		828,511	[3]
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	3		5	6		7
Accruing loans past due 30-89 days	938			938			2,168
Past due nonaccrual loans and loans past due 90 days or more and accruing	16,475	[1]		16,475	[1]		18,274	[2]
Total loans past due	17,413			17,413			20,442
Total current	1,085,698			1,085,698			1,095,596
Recorded Investment	1,103,111	[3]		1,103,111	[3]		1,116,038	[3]
Loans past due 90 days or more and accruing	0			0			2
Financing Receivable, Modifications, Recorded Investment, During Period	315		1,502	996		1,678
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	88		103	159		175
Accruing loans past due 30-89 days	10,802			10,802			12,143
Past due nonaccrual loans and loans past due 90 days or more and accruing	3,044	[1]		3,044	[1]		3,941	[2]
Total loans past due	13,846			13,846			16,084
Total current	820,387			820,387			710,424
Recorded Investment	834,233			834,233			726,508
Loans past due 90 days or more and accruing	1,020			1,020			1,016
Financing Receivable, Modifications, Recorded Investment, During Period	626		590	851		854
Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	0			0			0
Past due nonaccrual loans and loans past due 90 days or more and accruing	0	[1]		0	[1]		0	[2]
Total loans past due	0			0			0
Total current	3,254			3,254			3,427
Recorded Investment	3,254			3,254			3,427
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	2		3	6		7
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	918		1,298	1,380		2,825
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			106	158		7
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			180			217
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0		0	0		0
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0		0	0		0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period						376
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	357		582	457		1,457
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	108		28	108		91
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	93		24	95		70
Accruing Financing Receivable Modifications [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period						25
Accruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	360		378	562		582
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	1,974		3,944	2,773		6,330
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	294		156	194		489
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	549			208
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3			3		25
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			1,007	48		2,582
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	375		1,032	864		1,274
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	168		0	168		0
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	4		35	3		35
Nonaccruing Financing Receivable Modifications [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	315		1,502	996		1,653
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 266		$ 212	$ 289		$ 272

[1] Includes $6.6 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings. December 31, 2013(in thousands)Accruing loanspast due 30-89days Past duenonaccrual loans and loans pastdue 90 days ormore andaccruing* Total past due Total current Total recordedinvestmentCommercial, financial and agricultural$1,233 $13,275 $14,508 $814,003 $828,511Commercial real estate2,168 18,274 20,442 1,095,596 1,116,038Construction real estate: SEPH commercial land and development— 4,242 4,242 1,606 5,848Remaining commercial— 3,463 3,463 107,642 111,105Mortgage264 75 339 31,639 31,978Installment207 14 221 7,351 7,572Residential real estate: Commercial900 5,659 6,559 401,732 408,291Mortgage13,633 11,829 25,462 1,120,851 1,146,313HELOC571 402 973 213,462 214,435Installment696 436 1,132 32,841 33,973Consumer12,143 3,941 16,084 710,424 726,508Leases— — — 3,427 3,427Total loans$31,815 $61,610 $93,425 $4,540,574 $4,633,999* Includes $1.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.

[2] * Includes $6.6 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.

[3] Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.