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Stock Based Compensation (Schedule Of Stock Based Compensation Expense) (Details) (USD $)
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Stock Based Compensation [Abstract]    
Stock Based Compensation Expense$ 1,400$ 1,300$ 4,100$ 4,300