Off-Balance-Sheet Arrangements, Commitments, Guarantees And Contingencies (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Off-Balance-Sheet Arrangments, Commitments, Guarantees And Contingencies [Abstract]
Commitments to extend commercial and real estate mortgage credit	$ 248,337,000	$ 157,461,000
Standby and commercial letters of credit	6,744,000	5,592,000
Total	255,081,000	163,053,000
Maximum amount payable for Severance Compensation Plan	$ 3,400,000