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Loss Per Share | 6 Months Ended
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Apr. 30, 2017
Earnings Per Share [Abstract] |
Loss Per Share | Note 11. 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, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (13,238 | ) |  | $ | (15,414 | ) |  | $ | (26,923 | ) |  | $ | (27,193 | )
Net loss attributable to noncontrolling interest |  |  | — |  |  |  | 41 |  |  |  | — |  |  |  | 108 |
Preferred stock dividend |  |  | (800 | ) |  |  | (800 | ) |  |  | (1,600 | ) |  |  | (1,600 | )
Net loss attributable to common shareholders |  | $ | (14,038 | ) |  | $ | (16,173 | ) |  | $ | (28,523 | ) |  | $ | (28,685 | )
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average basic common shares |  |  | 42,568,818 |  |  |  | 28,782,066 |  |  |  | 40,049,948 |  |  |  | 27,500,236 |
Effect of dilutive securities (1) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Weighted average diluted common shares |  |  | 42,568,818 |  |  |  | 28,782,066 |  |  |  | 40,049,948 |  |  |  | 27,500,236 |
Basic loss per share |  | $ | (0.33 | ) |  | $ | (0.56 | ) |  | $ | (0.71 | ) |  | $ | (1.04 | )
Diluted loss per share (1) |  | $ | (0.33 | ) |  | $ | (0.56 | ) |  | $ | (0.71 | ) |  | $ | (1.04 | )
(1) | Due to the net loss to common shareholders in each of the periods presented above, diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. As of April 30, 2017 and 2016, potentially dilutive securities excluded from the diluted loss per share calculation are as follows:
|  | April 30, 2017 |  |  | April 30, 2016 |
July 2016 Offering - Series A Warrants |  |  | 7,680,000 |  |  |  | — |
July 2014 Offering - NRG Warrants |  |  | 166,666 |  |  |  | 166,666 |
Outstanding options to purchase common stock |  |  | 214,383 |  |  |  | 251,653 |
Unvested Restricted Stock Awards |  |  | 1,986,732 |  |  |  | 908,595 |
5% Series B Cumulative Convertible Preferred Stock |  |  | 454,043 |  |  |  | 454,043 |
Series 1 Preferred Shares to satisfy conversion requirements |  |  | 15,166 |  |  |  | 15,166 |
Total potentially dilutive securities |  |  | 10,516,990 |  |  |  | 1,796,123 |
Refer to Note 12, Redeemable Preferred Stock, which is included in our Annual Report on Form 10-K for the year ended October 31, 2016 for information on the calculation of the common shares upon conversion.

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