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Quarterly Financial Data (Tables)
12 Months Ended
May 31, 2013
Quarterly Financial Data [Abstract]  
Summary of the results of operation for each of the quarters within the fiscal year
The following is a summary of the results of operation for each of the quarters within the fiscal years ended May 31, 2013 and 2012:
May 31, 2013 (in thousands)
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
 
 
 
 
 
 
 
Revenue
$
1,051,325

 
$
1,060,386

 
$
1,075,674

 
$
1,129,086

Gross margin
$
445,875

 
$
432,036

 
$
441,941

 
$
467,215

Net income
$
76,733

 
$
78,027

 
$
74,705

 
$
85,977

Basic earnings per share
$
0.61

 
$
0.63

 
$
0.60

 
$
0.69

Diluted earnings per share
$
0.60

 
$
0.63

 
$
0.60

 
$
0.69

Weighted average number of shares outstanding
126,110

 
124,185

 
123,120

 
122,392


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