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Loss Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2015
Jul. 31, 2015
Apr. 30, 2015
Jan. 31, 2015
Oct. 31, 2014
Jul. 31, 2014
Apr. 30, 2014
Jan. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Numerator [Abstract]                      
Net loss $ (8,905) $ (6,628) $ (9,997) $ (4,154) $ (4,890) $ (7,139) $ (16,039) $ (10,815) $ (29,684) $ (38,883) $ (35,319)
Net Income (Loss) Attributable to Noncontrolling Interest                 325 758 961
Dividends, Preferred Stock (800) (800) (800) (800) (800) (800) (800) (800) (3,200) (3,200) (3,200)
Net loss to common shareholders $ (9,660) $ (7,339) $ (10,694) $ (4,866) $ (5,500) $ (7,778) $ (16,643) $ (11,404) $ (32,559) $ (41,325) $ (37,558)
Demoninator [Abstract]                      
Weighted Average Number of Shares Outstanding, Basic                 24,513,731 20,473,915 15,543,750
Weighted Average Number Diluted Shares Outstanding Adjustment                 0 0 0 [1]
Weighted Average Number of Shares Outstanding, Diluted                 24,513,731 20,473,915 15,543,750
Earnings Per Share, Basic                 $ (1.33) $ (2.02) $ (2.42)
Earnings Per Share, Diluted                 $ (1.33) $ (2.02) $ (2.42) [1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 257,769       252,340       257,769 252,340 300,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 200,000       500,000       200,000 500,000 400,000
[1] Due to the net loss to common shareholders in each of the years presented above, diluted earnings per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. Potentially dilutive instruments include stock options, warrants, unvested RSAs and RSUs and convertible preferred stock. At October 31, 2015, 2014 and 2013, there were options to purchase 0.3 million shares of common stock. At October 31, 2015, 2014 and 2013, respectively, there were warrants to purchase 0.2 million, 0.5 million and 0.4 million shares of common stock, which were not included in the calculation of diluted earnings per share as they would be antidiulutive.