Loans (Credit Quality Indicators - Residential, Consumer) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Under 90 Days Past Due [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 726,849	$ 714,023
Under 90 Days Past Due [Member] | Consumer Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	323,489	323,059
Over 90 Days Past Due [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,843	3,658
Over 90 Days Past Due [Member] | Consumer Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	693	844
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	226,801	226,333
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Home Equity Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	40,742	39,078
Consumer Segment [Member] | Under 90 Days Past Due [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	55,946	57,648
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	262	528
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Home Equity Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	416	251
Consumer Segment [Member] | Over 90 Days Past Due [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15	65
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Accruing Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	703,332	686,640
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Nonaccrual Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,252	2,500
Residential Mortgage [Member] | Under 90 Days Past Due [Member] | Homeowner Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	20,265	24,883
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	4,843	3,658
Residential Mortgage [Member] | Over 90 Days Past Due [Member] | Homeowner Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 0	$ 0