Loans (Credit Quality Indicators - Residential, Consumer) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Residential Mortgage [Member] | Under 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 744,605	$ 714,023
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Accruing Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	720,632	686,640
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Nonaccrual Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,260	2,500
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Homeowner Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	20,713	24,883
Residential Mortgage [Member] | Over 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,266	3,658
Residential Mortgage [Member] | Over 90 Days Past Due [Member] | Accruing Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Residential Mortgage [Member] | Over 90 Days Past Due [Member] | Nonaccrual Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,266	3,658
Residential Mortgage [Member] | Over 90 Days Past Due [Member] | Homeowner Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Consumer Segment [Member] | Under 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	325,580	323,059
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	228,340	226,333
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Home Equity Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	40,937	39,078
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	56,303	57,648
Consumer Segment [Member] | Over 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	415	844
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	27	528
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Home Equity Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	375	251
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 13	$ 65