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Significant Accounting Policies - Additional Information (Details)
In Thousands, unless otherwise specified
Mar. 31, 2014
USD ($)
Mar. 31, 2014
CAD
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CAD
Summary Of Significant Accounting Policies [Line Items]        
Money market investments $ 1,333   $ 1,635  
Cash $ 5 2 $ 28 39