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Additional Paid-In Capital (Summary Of The Status Of Unvested Stock Options) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Additional Paid-In Capital [Abstract]      
Unvested, Number of options (in shares) 300,000 597,500 82,500
Granted, Number of options (in shares) 600,000 1,246,000  
Vested, Number of options (in shares) (897,000) (693,000)  
Forfeited, Number of options (in shares)   (38,000)  
Unvested, Weighted average grant-date fair value per option (in dollars per share) $ 1.47 $ 1.60 $ 1.36
Granted, Weighted average grant-date fair value per option (in dollars per share) $ 1.47 $ 1.60  
Vested, weighted average grant-date fair value per option (in dollars per share) $ 1.56 $ 1.57  
Forfeited, Weighted average grant-date fair value per option (in dollars per share)   $ 1.51