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Stock Options (Tables)
12 Months Ended
Dec. 31, 2012
Stock Options [Abstract]  
Schedule Of Stock Option Activity
  2012 2011 2010
        Weighted       Weighted       Weighted
        Average       Average       Average
        Exercise       Exercise       Exercise
  Shares     Price Shares     Price Shares     Price
Outstanding,                        
beginning of year 1,471,000   $ 0.61 1,571,000   $ 0.60 3,021,000   $ 0.42
Granted 87,500   $ 0.85 186,745   $ 1.01 396,000   $ 0.44
Exercised (105,000 ) $ 0.50 (50,000 ) $ 0.57 (1,831,000 ) $ 0.27
Expired/cancelled (81,250 ) $ 1.12 (236,745 ) $ 0.82 (15,000 ) $ 0.58
Outstanding, end of                        
year 1,372,250   $ 0.61 1,471,000   $ 0.61 1,571,000   $ 0.60
Exercisable, end of                        
year 1,212,250   $ 0.62 1,231,000   $ 0.63 795,000   $ 0.70
Schedule Of Stock Options Outstanding And Exercisable
  Weighted Average Options Outstanding Weighted Average Options
  Exercise Price (shares) Remaining Contractual Exercisable
      Life (years) (shares)
$ 0.57 400,000 0.1 400,000
$ 1.44 50,000 0.4 50,000
$ 0.70 50,000 1.0 50,000
$ 0.50 400,000 2.8 240,000
$ 0.43 50,000 2.1 50,000
$ 0.44 241,000 2.7 241,000
$ 1.08 50,000 3.3 50,000
$ 1.16 18,750 3.3 18,750
$ 0.84 18,750 3.5 18,750
$ 0.72 18,750 3.8 18,750
$ 0.75 18,750 4.0 18,750
$ 1.07 18,750 4.2 18,750
$ 0.81 18,750 4.5 18,750
$ 0.73 18,750 4.7 18,750
 
    1,372,250   1,212,250
Schedule Of Options Issued
Options Issued to Total Options Issued to        
Each Non-executive Non-executive Directors   Exercise Price Grant Date Expiration Date
Director          
6,250 25,000 $ 0.75 1/3/2012 1/2/2017
6,250 25,000 $ 1.07 4/2/2012 4/1/2017
6,250 18,750 $ 0.81 7/2/2012 7/1/2017
6,250 18,750 $ 0.73 10/1/2012 9/30/2017