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Loss Per Share
 6 Months Ended
Apr. 30, 2014
Earnings Per Share [Abstract]  
Loss Per Share
Loss Per Share
The calculation of basic and diluted loss per share was as follows:
 
Three Months Ended April 30,
 
Six Months Ended April 30,
 
2014
 
2013
 
2014
 
2013
Numerator
 
 
 
 
 
 
 
Net loss
$
(16,039
)
 
$
(7,629
)
 
$
(26,854
)
 
$
(19,508
)
Net loss attributable to noncontrolling interest
196

 
264

 
407

 
462

Preferred stock dividend
(800
)
 
(800
)
 
(1,600
)
 
(1,600
)
Net loss attributable to common shareholders
$
(16,643
)
 
$
(8,165
)
 
$
(28,047
)
 
$
(20,646
)
Denominator
 
 
 
 
 
 
 
Weighted average basic common shares
243,289,058

 
190,431,554

 
221,609,975

 
188,968,577

Effect of dilutive securities (1)
—

 
—

 
—

 
—

Weighted average diluted common shares
243,289,058

 
190,431,554

 
221,609,975

 
188,968,577

Basic loss per share
$
(0.07
)
 
$
(0.04
)
 
$
(0.13
)
 
$
(0.11
)
              Diluted loss per share (1)
$
(0.07
)
 
$
(0.04
)
 
$
(0.13
)
 
$
(0.11
)
 
(1)
Diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. Potentially dilutive instruments include stock options, unvested restricted stock awards, convertible preferred stock, senior unsecured convertible notes and warrants. At April 30, 2014 and 2013, there were options to purchase 3.1 million shares of common stock.