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Additional Paid-In Capital (Summary Of Restricted Stock Units Activity) (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Additional Paid-In Capital [Abstract]      
Unvested, Number of units (in shares) 1,994,507 960,000 175,500
Forfeited, Number of units (in shares)   (10,000)  
Granted, Number of units (in shares) 1,142,339 960,000  
Vested, Number of units (in shares)   (165,500)  
Cancelled, Number of units (in shares) (107,832)    
Unvested, Weighted average fair value (in dollars per share) $ 3.52 $ 3.84 $ 2.37
Forfeited, Weighted average fair value (in dollars per share) $ 3.07 $ 2.37  
Cancelled, Weighted average fair value (in dollars per share) $ 3.07 $ 2.37  
Granted, Weighted average fair value (in dollars per share) $ 3.20 $ 3.84  
Vested, Weighted average fair value (in dollars per share)   $ 2.37