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Loss Per Share and Stockholders' Equity (Tables)
 9 Months Ended
Jan. 31, 2018
Earnings Per Share [Abstract]  
Computations Of Basic And Diluted Earnings Per Share
The computations of basic and diluted loss per share from continuing operations are as follows:
(in 000s, except per share amounts)
 
 
 
Three months ended January 31,
 
Nine months ended January 31,
 
 
2018

 
2017

 
2018

 
2017

Net loss from continuing operations attributable to shareholders
 
$
(242,925
)
 
$
(101,212
)
 
$
(519,055
)
 
$
(365,653
)
Amounts allocated to participating securities
 
(177
)
 
(143
)
 
(498
)
 
(410
)
Net loss from continuing operations attributable to common shareholders
 
$
(243,102
)
 
$
(101,355
)
 
$
(519,553
)
 
$
(366,063
)
 
 
 
 
 
 
 
 
 
Basic weighted average common shares
 
209,080

 
207,862

 
208,693

 
214,627

Potential dilutive shares
 
—

 
—

 
—

 
—

Dilutive weighted average common shares
 
209,080

 
207,862

 
208,693

 
214,627

 
 
 
 
 
 
 
 
 
Loss per share from continuing operations attributable to common shareholders:
Basic
 
$
(1.16
)
 
$
(0.49
)
 
$
(2.49
)
 
$
(1.71
)
Diluted
 
(1.16
)
 
(0.49
)
 
(2.49
)
 
(1.71
)