Loans (Troubled Debt Restructurings) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2012 contract		Sep. 30, 2011 contract		Sep. 30, 2012 contract		Sep. 30, 2011 contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 3,300,000				$ 3,300,000
Loans and Leases Receivable, Impaired, Commitment to Lend	7,000				7,000
Financing Receivable, Recorded Investment, Current	2,800,000				2,800,000
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	3		0		4		4
Recorded Investment, Pre-Modification	422,000	[1]	0	[1]	752,000	[1]	3,197,000	[1]
Recorded Investment, Post-Modification	422,000	[1]	0	[1]	752,000	[1]	3,197,000	[1]
Total Recorded Investment	413,000	[1]	0	[1]	743,000	[1]	3,001,000	[1]
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	2				2
Recorded Investment, Pre-Modification	58,000	[1]			58,000	[1]
Recorded Investment, Post-Modification	58,000	[1]			58,000	[1]
Total Recorded Investment	58,000	[1]			58,000	[1]
Real Estate Construction
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	0				0
Recorded Investment, Pre-Modification	0	[1]			0	[1]
Recorded Investment, Post-Modification	0	[1]			0	[1]
Total Recorded Investment	0	[1]			0	[1]
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	71				71
Recorded Investment, Pre-Modification	2,788,000	[1]			2,788,000	[1]
Recorded Investment, Post-Modification	2,788,000	[1]			2,788,000	[1]
Total Recorded Investment	2,788,000	[1]			2,788,000	[1]
Home Equity Lines of Credit
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	20				20
Recorded Investment, Pre-Modification	244,000	[1]			244,000	[1]
Recorded Investment, Post-Modification	244,000	[1]			244,000	[1]
Total Recorded Investment	244,000	[1]			244,000	[1]
Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts During Period	33				33
Recorded Investment, Pre-Modification	143,000	[1]			143,000	[1]
Recorded Investment, Post-Modification	143,000	[1]			143,000	[1]
Total Recorded Investment	$ 143,000	[1]			$ 143,000	[1]

[1] The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported.