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Common Shares (Summary Of the Fair Value Of All Awards issued Under Stock Compensation Plans) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Percentage of issued and outstanding Common Shares 10.00%  
Stock-based expense $ 817 $ 1,126
Employee, Directors and Consultants Stock Options [Member]    
Stock-based expense 8 160
Restricted Stock Units (RSUs) [Member]    
Stock-based expense $ 809 $ 966