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Employee Stock Compensation Plans - Stock Option Plan Activity (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Outstanding, beginning of year 2,433,400 2,584,000
Weighted Average Exercise Price(Cdn$) 2.27 2.23
Granted 165,000   
Weighted Average Exercise Price(Cdn$) 1.49   
Exercised    (150,600)
Weighted Average Exercise Price(Cdn$)    1.60
Cancelled      
Weighted Average Exercise Price(Cdn$)      
Forfeited      
Weighted Average Exercise Price(Cdn$)      
Outstanding, end of year 2,598,400 2,433,400
Weighted Average Exercise Price(Cdn$) 2.22 2.27
Aggregate Intrinsic Value $ 1,650   
Exercisable, end of year 1,958,400 1,271,150
Weighted Average Exercise Price(Cdn$) 2.22 2.24
Aggregate Intrinsic Value $ 413