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Note 3 - Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

Three Months Ended

September 30,

   

Nine Months Ended

September 30,

 
   

2013

   

2012

   

2013

   

2012

 

Numerator:

                               
                                 

Income from continuing operations attributable to SPAR Group, Inc.

  $ 322     $ 569     $ 194     $ 1,554  
                                 

Denominator:

                               

Shares used in basic net income per share calculation

    20,503       20,275       20,483       20,175  
                                 

Effect of diluted securities:

                               

Employee stock options

    1,278       1,712       1,225       1,507  
                                 

Shares used in diluted net income per common share calculation

    21,781       21,987       21,708       21,682  
                                 

Basic net income per common share

  $ 0.02     $ 0.03     $ 0.01     $ 0.08  
                                 

Diluted net income per common share

  $ 0.02     $ 0.03     $ 0.01     $ 0.07