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Quarterly Financial Information, Unaudited (Notes)
12 Months Ended
Feb. 28, 2014
Quarterly Financial Information Disclosure [Abstract]  
Quarterly financial information, Unaudited
Quarterly financial information, Unaudited (in thousands, except per share amounts)

 
 
Quarter ended
 
 
May 31,
2013
 
August 31,
2013
 
November 30,
2013
 
February 28,
2014
Net sales
 
$
183,175

 
$
189,782

 
$
197,755

 
$
181,011

Segment operating income
 
38,746

 
36,978

 
33,169

 
28,955

Net income
 
14,547

 
16,363

 
18,445

 
10,242

Basic earnings per common share
 
0.27

 
0.95

 
0.72

 
0.42

Diluted earnings per common share
 
0.26

 
0.94

 
0.72

 
0.42

 
 
 
Quarter ended
 
 
May 31,
2012
 
August 31,
2012
 
November 30,
2012
 
February 28,
2013
Net sales
 
$
127,143

 
$
153,385

 
$
149,675

 
$
140,391

Gross profit
 
37,866

 
43,312

 
45,003

 
37,992

Net income
 
15,986

 
15,873

 
15,364

 
13,233

Basic earnings per common share
 
0.63

 
0.63

 
0.61

 
0.52

Diluted earnings per common share
 
0.63

 
0.62

 
0.60

 
0.52