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Note 3 - Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2016
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Three Months Ended
September 30
,
 
 
Nine Months Ended
September 30
,
 
 
 
20
16
 
 
20
15
 
 
20
16
 
 
20
15
 
Numerator:
                                
Net (loss) income attributable to SPAR Group, Inc.
 
$
(58
)
   $ (92 )
 
$
84
 
   $ (137 )
                                 
Denominator:
                                
Weighted average shares used in basic net income per share calculation
 
 
20,607
 
     20,556  
 
 
20,580
 
     20,562  
                                 
Weighted average shares used in diluted net income per share calculation
 
 
20,607
 
     20,556  
 
 
21,299
 
     20,562  
                                 
Basic and diluted net (loss) income per common share
 
$
–
 
 
$
–
 
 
$
–
 
   $ (0.01 )