Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014 Contract		Jun. 30, 2013 Contract		Jun. 30, 2014 Contract		Jun. 30, 2013 Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	75		147		127		336
Recorded Investment	$ 52,025	[1]	$ 104,221	[1]	$ 74,660	[2]	$ 166,402	[2]
Net charge-offs							53
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	4		0		6		1
Recorded Investment	892		0		1,179		80
Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	7		38		8		84
Recorded Investment	1,755		2,639		1,856		10,162
Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0		0		0		0
Recorded Investment	0		0		0		0
Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6		14		10		38
Recorded Investment	560		450		677		1,488
Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3		17		6		31
Recorded Investment	1,019		33,633		8,482		51,524
1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	14		21		18		58
Recorded Investment	1,328		19,379		2,547		30,951
Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	10		6		11		16
Recorded Investment	5,790		8,255		6,324		12,637
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	27		44		35		105
Recorded Investment	8,137		61,267		17,353		95,112
Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6		30		13		57
Recorded Investment	9,316		16,683		13,312		27,080
Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2		10		9		27
Recorded Investment	28,160		22,218		33,466		29,955
Small Business [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	23		11		46		24
Recorded Investment	3,205		964		6,817		2,525
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	31		51		68		108
Recorded Investment	40,681		39,865		53,595		59,560
Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	17		52		24		123
Recorded Investment	3,207		3,089		3,712		11,730
Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		681
Principal Forgiveness [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		424
Principal Forgiveness [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		74
Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		498
Principal Forgiveness [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		183
Principal Forgiveness [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Principal Forgiveness [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		183
Principal Forgiveness [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Below Market Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	28,322		71,884		40,515		118,543
Below Market Interest Rate [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	487		0		728		0
Below Market Interest Rate [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,652		2,204		1,753		7,124
Below Market Interest Rate [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0		0		0
Below Market Interest Rate [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	442		88		442		460
Below Market Interest Rate [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		31,375		7,143		47,152
Below Market Interest Rate [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	903		17,067		1,036		24,031
Below Market Interest Rate [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	4,282		1,353		4,282		5,332
Below Market Interest Rate [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	5,185		49,795		12,461		76,515
Below Market Interest Rate [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,279		9,430		4,070		17,907
Below Market Interest Rate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	16,827		10,337		19,315		15,620
Below Market Interest Rate [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,450		30		1,746		917
Below Market Interest Rate [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	20,556		19,797		25,131		34,444
Below Market Interest Rate [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,581		2,292		2,923		7,584
Term Extensions and or Other Concessions [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	23,703		32,337		34,145		47,178
Term Extensions and or Other Concessions [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	405		0		451		80
Term Extensions and or Other Concessions [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	103		435		103		3,038
Term Extensions and or Other Concessions [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment			0		0		0
Term Extensions and or Other Concessions [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	118		362		235		1,028
Term Extensions and or Other Concessions [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,019		2,258		1,339		4,372
Term Extensions and or Other Concessions [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	425		2,312		1,511		6,496
Term Extensions and or Other Concessions [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,508		6,902		2,042		7,231
Term Extensions and or Other Concessions [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,952		11,472		4,892		18,099
Term Extensions and or Other Concessions [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	7,037		7,253		9,242		8,990
Term Extensions and or Other Concessions [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	11,333		11,881		14,151		14,335
Term Extensions and or Other Concessions [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,755		934		5,071		1,608
Term Extensions and or Other Concessions [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	20,125		20,068		28,464		24,933
Term Extensions and or Other Concessions [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	$ 626		$ 797		$ 789		$ 4,146

[1] No net charge-offs were recorded during the three months ended June 30, 2014 upon restructuring of these loans.

[2] No net charge-offs were recorded during the six months ended June 30, 2014 upon restructuring of these loans.