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Quarterly Financial Data (Unaudited)
 12 Months Ended
May 31, 2012
Quarterly Financial Data [Abstract]  
Quarterly Financial Data
Quarterly Financial Data (Unaudited)
The following is a summary of the results of operation for each of the quarters within the fiscal years ended May 31, 2012 and 2011:
May 31, 2012 (in thousands)
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
 
 
 
 
 
 
 
Revenue
$
1,017,180

 
$
1,019,126

 
$
1,012,112

 
$
1,053,582

Gross margin
$
439,040

 
$
429,797

 
$
425,903

 
$
443,868

Net income
$
68,638

 
$
74,350

 
$
76,035

 
$
78,614

Basic earnings per share
$
0.52

 
$
0.57

 
$
0.58

 
$
0.60

Diluted earnings per share
$
0.52

 
$
0.57

 
$
0.58

 
$
0.60

Weighted average number of shares outstanding
131,309

 
129,727

 
129,735

 
128,788


May 31, 2011 (in thousands)
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
 
 
 
 
 
 
 
Revenue
$
923,904

 
$
936,566

 
$
937,827

 
$
1,012,087

Gross margin
$
393,671

 
$
390,648

 
$
391,921

 
$
433,047

Net income
$
61,277

 
$
55,866

 
$
59,070

 
$
70,776

Basic earnings per share
$
0.40

 
$
0.38

 
$
0.41

 
$
0.49

Diluted earnings per share
$
0.40

 
$
0.38

 
$
0.41

 
$
0.49

Weighted average number of shares outstanding
152,164

 
145,511

 
145,303

 
143,317