Bank Premises and Equipment (Leases) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Future Lease Payments [Line Items]
Operating Leases, Rent Expense	$ 887,000	$ 921,000	$ 916,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	764,000
Operating Leases, Future Minimum Payments, Due in Two Years	497,000
Operating Leases, Future Minimum Payments, Due in Three Years	330,000
Operating Leases, Future Minimum Payments, Due in Four Years	323,000
Operating Leases, Future Minimum Payments, Due in Five Years	280,000
Operating Leases, Future Minimum Payments, Due Thereafter	1,225,000
Related Party Operating Lease Expense [Member]
Future Lease Payments [Line Items]
Operating Leases, Rent Expense	$ 146,000	$ 141,000	$ 166,000