Loans (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 item	Sep. 30, 2012
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	$ 4,241	$ 3,397	$ 4,578	$ 3,681
Interest income recognized on an accrual basis on impaired loans	$ 33	$ 35	$ 86	$ 109
Number of points in internal risk rating system			9
Number of categories in internal risk rating system considered as not criticized			6
Maximum period above which loans past due are considered Substandard			90 days