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Loss Per Share | 6 Months Ended
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Apr. 30, 2013
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,
| 2013 |  | 2012 |  | 2013 |  | 2012
Numerator |  |  |  |  |  |  |
Net loss | $ | (7,629 | ) |  | $ | (8,363 | ) |  | $ | (19,508 | ) |  | $ | (14,377 | )
Net loss attributable to noncontrolling interest | 264 |  |  | 71 |  |  | 462 |  |  | 142 |
Preferred stock dividend | (800 | ) |  | (801 | ) |  | (1,600 | ) |  | (1,601 | )
Net loss attributable to common shareholders | $ | (8,165 | ) |  | $ | (9,093 | ) |  | $ | (20,646 | ) |  | $ | (15,836 | )
Denominator |  |  |  |  |  |  |
Weighted average basic common shares | 190,431,554 |  |  | 150,013,074 |  |  | 188,968,577 |  |  | 144,830,437 |
Effect of dilutive securities (1) | — |  |  | — |  |  | — |  |  | — |
Weighted average diluted common shares | 190,431,554 |  |  | 150,013,074 |  |  | 188,968,577 |  |  | 144,830,437 |
Basic loss per share | $ | (0.04 | ) |  | $ | (0.06 | ) |  | $ | (0.11 | ) |  | $ | (0.11 | )
Diluted loss per share (1) | $ | (0.04 | ) |  | $ | (0.06 | ) |  | $ | (0.11 | ) |  | $ | (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 and convertible preferred stock. At April 30, 2013 and 2012, there were options to purchase 3.2 million and 3.3 million, respectively, shares of common stock. Refer to our Annual Report on Form 10-K for the year ended October 31, 2012 for information on our convertible preferred stock.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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