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Leases (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]    
Beginning Balance $ 903 $ 784
Charged to earnings 812 867
Deductions (1,012) (748)
Ending Balance $ 703 $ 903