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Common Shares (Summary Of the Fair Value Of All Awards issued Under Stock Compensation Plans) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Percentage of issued and outstanding Common Shares     10.00%  
Stock-based expense $ 166 $ 239 $ 308 $ 467
Employee, Directors and Consultants Stock Options [Member]        
Stock-based expense 3 2 5 4
Restricted Stock Units (RSUs) [Member]        
Stock-based expense $ 163 $ 237 $ 303 $ 463