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Note 1. Basis of Presentation (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   
Three Months
Ended September 30,
   
Nine Months
Ended September 30,
 
   
2012
   
2011
   
2012
   
2011
 
Weighted average shares which are not included in the calculation of diluted earnings (loss) per share because their impact is anti-dilutive:
                       
Stock options
    3,444       2,098       3,301       2,170  
Restricted stock units
    379       1,968       475       1,854  
      3,823       4,066       3,776       4,024