Credit Quality and Related Allowance for Loan Losses (Details 3) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013 contract	Jun. 30, 2012 contract	Jun. 30, 2013 contract	Jun. 30, 2012 contract	Dec. 31, 2012
Troubled debt restructurings
Number of Contracts	2	1	4	5
Pre-Modification Outstanding Recorded Investment	$ 61,000	$ 49,000	$ 325,000	$ 217,000
Post-Modification Outstanding Recorded Investment	61,000	49,000	325,000	217,000
Reasonable period for classification of troubled debt restructuring nonperforming loans to performing status			6 months
Troubled debt restructurings	10,961,000		10,961,000		16,217,000
Residential Real Estate Mortgages
Troubled debt restructurings
Number of Contracts	2	1	2	2
Pre-Modification Outstanding Recorded Investment	61,000	49,000	61,000	154,000
Post-Modification Outstanding Recorded Investment	61,000	49,000	61,000	154,000
Commercial Real Estate Mortgage
Troubled debt restructurings
Number of Contracts			2	1
Pre-Modification Outstanding Recorded Investment			264,000	37,000
Post-Modification Outstanding Recorded Investment			264,000	37,000
Recorded Investment	259,000		259,000
Number of Contracts	2		2
Construction Real Estate Mortgage
Troubled debt restructurings
Number of Contracts				2
Pre-Modification Outstanding Recorded Investment				26,000
Post-Modification Outstanding Recorded Investment				$ 26,000