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Computation of Earnings Per Share
 9 Months Ended
Feb. 28, 2015
Earnings Per Share [Abstract]  
Computation of Earnings Per Share
Computation of Earnings per Share
The following is a reconciliation of the denominator used in the computation of basic and diluted earnings per share for the three and nine months ended February 28, 2015 and 2014:
 
Three Months Ended 
 February 28,
 
Nine Months Ended 
 February 28,
 
2015
 
2014
 
2015
 
2014
Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings per share - weighted average common shares outstanding (including shares issuable for vested restricted stock units)
24,377

 
24,334

 
24,355

 
24,320

Effect of unvested restricted stock units
—

 
33

 
—

 
29

Diluted shares used in per share calculation
24,377


24,367


24,355


24,349

Net income
$
2,425

 
$
4,537

 
$
11,991

 
$
15,815

Earnings per share:
 
 
 
 
 
 
 
Basic
$
0.10

 
$
0.19


$
0.49


$
0.65

Diluted
$
0.10

 
$
0.19


$
0.49


$
0.65


We did not include 78 shares in the calculation of diluted earnings per share for the three and nine months ended February 28, 2015, respectively, and 5 shares in the calculation of diluted earnings per share for the three and nine months ended February 28, 2014, respectively, as to do so would be antidilutive.