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Summary Of Significant Accounting Policies (Schedule Of Anti-dilutive Securities Excluded From Computation Of Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Earnings Per Share [Abstract]      
Options and warrants 19,744 25,973 18,306
Weighted-average exercise prices of options and warrants $ 3.00 $ 2.49 $ 2.60
Average market price of common shares $ 0.79 $ 1.46 $ 2.02