Credit Quality Assessment (Details 6) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Troubled Debt Restructuring Modifications	$ 637	$ 991
Residential Real Estate First Lien [Member]
Troubled Debt Restructuring Modifications	0	240
Commercial Loan [Member]
Troubled Debt Restructuring Modifications	637	751
Residential Real Estate First Lien and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Residential Real Estate First Lien and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Residential Real Estate First Lien and Forberance [Member]
Troubled Debt Restructuring Modifications	0	0
Residential Real Estate First Lien and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	0	240
Commercial Loans and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Commercial Loans and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Commercial Loans and Forberance [Member]
Troubled Debt Restructuring Modifications	0	353
Commercial Loans and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	637	398
Nonperforming Financing Receivable [Member]
Troubled Debt Restructuring Modifications	637	751
Nonperforming Financing Receivable [Member] | Residential Real Estate First Lien [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Commercial Loan [Member]
Troubled Debt Restructuring Modifications	637	751
Nonperforming Financing Receivable [Member] | Residential Real Estate First Lien and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Residential Real Estate First Lien and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Residential Real Estate First Lien and Forberance [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Residential Real Estate First Lien and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Commercial Loans and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Commercial Loans and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Nonperforming Financing Receivable [Member] | Commercial Loans and Forberance [Member]
Troubled Debt Restructuring Modifications	0	353
Nonperforming Financing Receivable [Member] | Commercial Loans and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	637	398
Performing Financing Receivable [Member]
Troubled Debt Restructuring Modifications	0	240
Performing Financing Receivable [Member] | Residential Real Estate First Lien [Member]
Troubled Debt Restructuring Modifications	0	240
Performing Financing Receivable [Member] | Commercial Loan [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Residential Real Estate First Lien and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Residential Real Estate First Lien and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Residential Real Estate First Lien and Forberance [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Residential Real Estate First Lien and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	0	240
Performing Financing Receivable [Member] | Commercial Loans and Interest Only Payments [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Commercial Loans and Rate Modification [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Commercial Loans and Forberance [Member]
Troubled Debt Restructuring Modifications	0	0
Performing Financing Receivable [Member] | Commercial Loans and Extension Or Other Modification [Member]
Troubled Debt Restructuring Modifications	$ 0	$ 0