Loans (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014 loan		Sep. 30, 2013 loan		Sep. 30, 2014 loan		Sep. 30, 2013 loan
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	2		3		13		14
Pre-Modification Recorded Investment	$ 327	[1]	$ 6,048	[1]	$ 1,569	[1]	$ 17,264	[1]
Post-Modification Recorded Investment	327	[1]	4,939	[1]	1,569	[1]	16,075	[1]
Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		1		0		6
Pre-Modification Recorded Investment	0	[1]	6,018	[1]	0	[1]	15,974	[1]
Post-Modification Recorded Investment	0	[1]	4,909	[1]	0	[1]	14,785	[1]
Commercial Construction and Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0		0		0
Pre-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Post-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Commercial Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	1		2		10		7
Pre-Modification Recorded Investment	63	[1]	30	[1]	826	[1]	1,198	[1]
Post-Modification Recorded Investment	63	[1]	30	[1]	826	[1]	1,198	[1]
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	1		0		3		0
Pre-Modification Recorded Investment	264	[1]	0	[1]	743	[1]	0	[1]
Post-Modification Recorded Investment	264	[1]	0	[1]	743	[1]	0	[1]
Homeowner Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0		0		0
Pre-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Post-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0		0		1
Pre-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	92	[1]
Post-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	92	[1]
Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0		0		0
Pre-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Post-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0		0		0
Pre-Modification Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Post-Modification Recorded Investment	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]

[1] The recorded investment in troubled debt restructurings consists of unpaid principal balance, net of charge-offs and unamortized deferred loan origination fees and costs, at the time of the restructuring. For accruing troubled debt restructured loans, the recorded investment also includes accrued interest.