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Disclosure of Compensation Related Costs, Share Based Payments (Tables)
 6 Months Ended
Oct. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock Option Activity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of

 

 

 

 

Weighted

 

restricted

 

Number of

 

 

average option

 

stock units

 

option shares

 

 

exercise price

Outstanding at April 30, 2012
66,198 

 
1,053,509 

 

$

 

32.59

 

Granted
46,998 

 

 -

 

 

 

 -

 

Exercised

 -

 
(151,098)

 

 

 

24.13

 

Forfeited

 -

 
(500)

 

 

 

14.08

 

Outstanding at October 31, 2012
113,196 

 
901,911 

 

$

 

34.02