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Additional Paid-In-Capital
 12 Months Ended
Dec. 31, 2011
Additional Paid in Capital Disclosure [Abstract]  
Additional Paid-In-Capital

12. Additional Paid-In-Capital
 
   
For the years ended December 31,
 
   
2011
  
2010
 
Balance, beginning of year
 $7,565  $6,862 
Cancelled options
  -   4 
Expired options
  828   699 
Expired warrants - Note 10
  336   - 
Balance, end of year
 $8,729  $7,565