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Loss Per Share
 6 Months Ended
Apr. 30, 2012
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,
 
2012
 
2011
 
2012
 
2011
Numerator
 
 
 
 
 
 
 
Net loss
$
(8,363
)
 
$
(20,008
)
 
$
(14,377
)
 
$
(31,015
)
Net loss attributable to noncontrolling interest
71

 
52

 
142

 
121

       Modification of redeemable preferred stock of subsidiary
—

 
(8,987
)
 
—

 
(8,987
)
Preferred stock dividend
(801
)
 
(800
)
 
(1,601
)
 
(1,600
)
Net loss to common shareholders
$
(9,093
)
 
$
(29,743
)
 
$
(15,836
)
 
$
(41,481
)
Denominator
 
 
 
 
 
 
 
Weighted average basic common shares
150,013,074

 
125,009,180

 
144,830,437

 
119,963,394

Effect of dilutive securities (1)
—

 
—

 
—

 
—

Weighted average diluted common shares
150,013,074

 
125,009,180

 
144,830,437

—

119,963,394

Basic loss per share
$
(0.06
)
 
$
(0.24
)
 
$
(0.11
)
 
$
(0.35
)
              Diluted loss per share (1)
$
(0.06
)
 
$
(0.24
)
 
$
(0.11
)
 
$
(0.35
)
 
(1)
Diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive, as the strike prices are above current market price. Potentially dilutive instruments include stock options, warrants and convertible preferred stock. At April 30, 2012 and 2011, there were options to purchase 3.3 million and 4.9 million shares of common stock, respectively. There were outstanding warrants for the right to purchase 10.2 million shares as of April 30, 2012 and 2011, respectively. Refer to our Annual Report on Form 10-K for the year ended October 31, 2011 for information on our convertible preferred stock.