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Loss Per Share and Stockholders' Equity (Tables)
 3 Months Ended
Jul. 31, 2016
Earnings Per Share [Abstract]  
Schedule Of Share Repurchase And Retirements [Table Text Block]
The cost of shares retired during the current period was allocated to the components of stockholders’ equity as follows:
 
 
(in 000s)

 
 
 
Common stock
 
$
20

Additional paid-in-capital
 
1,223

Retained earnings
 
47,351

Total
 
$
48,594

 
 
 
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 July 31,
 
 
2016

 
2015

 
 
 
 
 
Net loss from continuing operations attributable to shareholders
 
$
(121,026
)
 
$
(96,505
)
Amounts allocated to participating securities
 
(124
)
 
(102
)
Net loss from continuing operations attributable to common shareholders
 
$
(121,150
)
 
$
(96,607
)
 
 
 
 
 
Basic weighted average common shares
 
220,484

 
275,765

Potential dilutive shares
 
—

 
—

Dilutive weighted average common shares
 
220,484

 
275,765

 
 
 
 
 
Loss per share from continuing operations attributable to common shareholders:
 
 
 
 
Basic
 
$
(0.55
)
 
$
(0.35
)
Diluted
 
(0.55
)
 
(0.35
)