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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2011
Earnings Per Share [Abstract]  
Computation of earnings per share under the treasury stock method and the effect on the weighted-average number of shares of dilutive potential common stock:

The following table represents amounts used in computing earnings per share and the effect on the weighted-average number of shares of dilutive potential common shares for the years ended December 31:
 
2011
 
2010
 
2009
Numerator:
 
 
 
 
 
Income (loss) used in basic and diluted earnings per share:
 
 
 
 
 
Income (loss) from continuing operations, net of tax
$
144,292

 
$
(20,527
)
 
$
73,102

Income (loss) from discontinued operations, net of tax
523

 
275

 
(47,076
)
Net income (loss) attributable to Diebold, Incorporated
$
144,815

 
$
(20,252
)
 
$
26,026

Denominator (in thousands):
 
 
 
 
 
Weighted-average number of common
     shares used in basic earnings per share
64,244

 
65,907

 
66,257

Effect of dilutive shares (a)
548

 

 
610

Weighted-average number of shares used in
      diluted earnings per share
64,792

 
65,907

 
66,867

Basic earnings per share:
 
 
 
 
 
Income (loss) from continuing operations, net of tax
$
2.24

 
$
(0.31
)
 
$
1.10

Income (loss) from discontinued operations, net of tax
0.01

 

 
(0.71
)
Net income (loss) attributable to Diebold, Incorporated
$
2.25

 
$
(0.31
)
 
$
0.39

Diluted earnings per share:
 
 
 
 
 
Income (loss) from continuing operations, net of tax
$
2.23

 
$
(0.31
)
 
$
1.09

Income (loss) from discontinued operations, net of tax
0.01

 

 
(0.70
)
Net income (loss) attributable to Diebold, Incorporated
$
2.24

 
$
(0.31
)
 
$
0.39

 
 
 
 
 
 
Anti-dilutive shares (in thousands):
 
 
 
 
 
Anti-dilutive shares not used in calculating diluted
      weighted-average shares
2,270

 
2,658

 
2,360

(a)
Incremental shares of 632,000 were excluded from the computation of diluted EPS for the year ended December 31, 2010 because their effect is anti-dilutive due to the loss from continuing operations.