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Loss Per Share and Stockholders' Equity (Tables)
 9 Months Ended
Jan. 31, 2014
Earnings Per Share [Abstract]  
Computations Of Basic And Diluted Earnings Per Share
The computations of basic and diluted earnings per share from continuing operations are as follows:
(in 000s, except per share amounts)
 
 
 
Three months ended
 
Nine months ended
 
 
January 31,
 
January 31,
 
 
2014

 
2013

 
2014

 
2013

Net loss from continuing operations attributable to shareholders
 
$
(212,751
)
 
$
(16,915
)
 
$
(429,036
)
 
$
(223,764
)
Amounts allocated to participating securities
 
(88
)
 
(62
)
 
(242
)
 
(199
)
Net loss from continuing operations attributable to common shareholders
 
$
(212,839
)
 
$
(16,977
)
 
$
(429,278
)
 
$
(223,963
)
 
 
 
 
 
 
 
 
 
Basic weighted average common shares
 
274,110

 
271,542

 
273,699

 
273,281

Potential dilutive shares
 
—

 
—

 
—

 
—

Dilutive weighted average common shares
 
274,110

 
271,542

 
273,699

 
273,281

 
 
 
 
 
 
 
 
 
Loss per share from continuing operations attributable to common shareholders:
 
 
 
 
 
 
 
 
Basic
 
$
(0.78
)
 
$
(0.06
)
 
$
(1.57
)
 
$
(0.82
)
Diluted
 
(0.78
)
 
(0.06
)
 
(1.57
)
 
(0.82
)