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Loss Per Share (Tables)
 6 Months Ended
Apr. 30, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The calculation of basic and diluted loss per share was as follows:
 
Three Months Ended April 30,
 
Six Months Ended April 30
 
2015
 
2014
 
2015
 
2014
Numerator
 
 
 
 
 
 
 
Net loss
$
(9,997
)
 
$
(16,039
)
 
$
(14,151
)
 
$
(26,854
)
Net loss attributable to noncontrolling interest
103

 
196

 
191

 
407

Preferred stock dividend
(800
)
 
(800
)
 
(1,600
)
 
(1,600
)
Net loss attributable to common shareholders
$
(10,694
)
 
$
(16,643
)
 
$
(15,560
)
 
$
(28,047
)
Denominator
 
 
 
 
 
 
 
Weighted average basic common shares
291,026,184

 
243,289,058

 
288,260,464

 
221,609,975

Effect of dilutive securities (1)
—

 
—

 
—

 
—

Weighted average diluted common shares
291,026,184

 
243,289,058

 
288,260,464

 
221,609,975

Basic loss per share
$
(0.04
)
 
$
(0.07
)
 
$
(0.05
)
 
$
(0.13
)
              Diluted loss per share (1)
$
(0.04
)
 
$
(0.07
)
 
$
(0.05
)
 
$
(0.13
)
 
(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 and warrants. As of April 30, 2015 and 2014, there were options to purchase 3.0 million and 3.1 million shares of common stock, respectively, and as of April 30, 2015 and 2014 and there were warrants to purchase 4.3 million and 5.0 million shares of common stock, respectively, which were excluded from the computation as they would be antidilutive.