Loans (Nonaccrual Loans) (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	$ 20,026,000	$ 22,543,000
Accruing loans 90 days or more past due	2,400,000	0
Commercial Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	9,976,000	10,681,000
Commercial Construction and Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	0	0
Commercial Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	1,400,000	4,412,000
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	7,526,000	6,158,000
Homeowner Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	0	0
Home Equity Lines [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	325,000	840,000
Home Equity Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	775,000	371,000
Other Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	24,000	81,000
Current Payment Status [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans on nonaccrual status	$ 2,800,000	$ 1,600,000