Components of Net Periodic Pension Cost (Narrative) (Details) (USD $)	6 Months Ended
	Jun. 30, 2012
Components of Net Periodic Pension Cost [Abstract]
General Discussion of Pension and Other Postretirement Benefits	The Corporation maintained a non-contributory pension plan for substantially all of its employees until September 30, 2007, at which time the Corporation froze its defined benefit pension plan.
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 500,000
Minimum amount to be funded as required by the Pension Relief Act Fifteen Year amortization of the Shortfall Amortization Base	$ 453,000