Loans (Estimated Aggregate Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Receivables [Abstract]
2013	$ 263
2014	215
2015	169
2016	132
2017	104
Thereafter	392
Total estimated amortization expense	$ 1,275	$ 937	$ 913	$ 969