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Unaudited Quarterly Financial Data
12 Months Ended
Mar. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Unaudited Quarterly Financial Data
UNAUDITED QUARTERLY FINANCIAL DATA

 
 
2018 Quarters
 
 
First
 
Second
 
Third
 
Fourth
Revenue
 
$
1,493,570

 
$
1,542,085

 
$
1,499,914

 
$
1,636,284

Operating income
 
139,464

 
126,486

 
118,087

 
136,048

Income before income taxes
 
121,478

 
106,091

 
98,013

 
112,422

Net income
 
79,540

 
70,913

 
69,773

 
84,885

Earnings per common share:
 
 
 
 
 
 
 
 
Basic (1)
 
$
0.53

 
$
0.48

 
$
0.48

 
$
0.59

Diluted (1)
 
$
0.53

 
$
0.47

 
$
0.47

 
$
0.58

 
 
2017 Quarters
 
 
First
 
Second
 
Third
 
Fourth
Revenue
 
$
1,422,722

 
$
1,394,853

 
$
1,404,638

 
$
1,582,071

Operating income
 
129,301

 
117,661

 
108,124

 
129,161

Income before income taxes
 
113,364

 
97,747

 
92,615

 
108,174

Net income
 
67,817

 
62,830

 
55,590

 
66,253

Earnings per common share:
 
 
 
 
 
 
 
 
Basic (1)
 
$
0.46

 
$
0.42

 
$
0.37

 
$
0.44

Diluted (1)
 
$
0.45

 
$
0.41

 
$
0.37

 
$
0.44


(1) Earnings per share are computed independently for each of the quarters presented and therefore may not sum to the total for the fiscal year.