Loans (Troubled Debt Restructurings Subsequent Default) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 loan		Dec. 31, 2013 loan
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	16		15
Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		6
Commercial Construction and Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	12		7
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	4		1
Homeowner Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		1
Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Payment Default [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	7		3
Recorded Investment on Modifications with Subsequent Default	669	[1]	1,071	[1]
Payment Default [Member] | Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		1
Recorded Investment on Modifications with Subsequent Default	0	[1]	232	[1]
Payment Default [Member] | Commercial Construction and Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	0	[1]	0	[1]
Payment Default [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	7		2
Recorded Investment on Modifications with Subsequent Default	669	[1]	839	[1]
Payment Default [Member] | Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	0	[1]	0	[1]
Payment Default [Member] | Homeowner Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	0	[1]	0	[1]
Payment Default [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	0	[1]	0	[1]
Payment Default [Member] | Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	0	[1]	0	[1]
Payment Default [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans Modified as a Troubled Debt Restructuring	0		0
Recorded Investment on Modifications with Subsequent Default	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. For accruing troubled debt restructured loans, the recorded investment also includes accrued interest.