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Additional Paid-In Capital (Summary Of Option Activity) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Additional Paid-In Capital [Abstract]    
Number of options, Outstanding 2,852,500 3,102,500
Number of options, Expired (in shares) (120,000)  
Number of options, Cancelled/Forfeited 130,000  
Number of options, Exercisable (in shares) 2,552,500  
Weighted average exercise price per share, Outstanding (in dollars per share) $ 2.76 $ 2.80
Weighted average exercise price per option, Expired (in dollars per share) $ 3.57  
Weighted average exercise price per share, Cancelled/Forfeited (in dollars per share) $ 3.16  
Weighted average exercise price per share, Exercisable (in dollars per share) $ 2.73  
Weighted average remaining contractual term, Outstanding 2 years 1 month 2 days 2 years 8 months 5 days
Weighted average remaining contractual term, Exercisable 1 year 10 months 17 days  
Aggregate intrinsic value, Outstanding   $ 637