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Loss Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2014 | Jul. 31, 2014 | Apr. 30, 2014 | Jan. 31, 2014 | Oct. 31, 2013 | Jul. 31, 2013 | Apr. 30, 2013 | Jan. 31, 2013 | Jan. 31, 2012 | Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2011
Numerator [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | $ (4,890)us-gaap_ProfitLoss | $ (7,139)us-gaap_ProfitLoss | $ (16,039)us-gaap_ProfitLoss | $ (10,815)us-gaap_ProfitLoss | $ (9,997)us-gaap_ProfitLoss | $ (5,814)us-gaap_ProfitLoss | $ (7,629)us-gaap_ProfitLoss | $ (11,879)us-gaap_ProfitLoss |  | $ (38,883)us-gaap_ProfitLoss |  | $ (35,319)us-gaap_ProfitLoss |  | $ (35,906)us-gaap_ProfitLoss |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | 758 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  | 961 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  | 411 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |
Dividends, Preferred Stock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock | (800)us-gaap_DividendsPreferredStock |  | (3,200)us-gaap_DividendsPreferredStock |  | (3,200)us-gaap_DividendsPreferredStock |  | (3,201)us-gaap_DividendsPreferredStock |  |
Net loss to common shareholders | $ (5,500)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (7,778)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (16,643)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (11,404)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (10,500)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (6,412)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (8,165)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ (12,481)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | $ (41,325)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | $ (37,558)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | $ (38,696)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |
Demoninator [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Number of Shares Outstanding, Basic |  |  |  |  |  |  |  |  |  | 245,686,983 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 186,525,001 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 165,471,261 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  |
Weighted Average Number Diluted Shares Outstanding Adjustment |  |  |  |  |  |  |  |  |  | 0 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | [1] | 0 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | [1] | 0 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | [1] |
Weighted Average Number of Shares Outstanding, Diluted |  |  |  |  |  |  |  |  | 186,525,001 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 245,686,983 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  | 186,525,001 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  | 165,471,261 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  |
Earnings Per Share, Basic |  |  |  |  |  |  |  |  |  | $ (0.17)us-gaap_EarningsPerShareBasic |  | $ (0.20)us-gaap_EarningsPerShareBasic |  | $ (0.23)us-gaap_EarningsPerShareBasic |  |
Earnings Per Share, Diluted |  |  |  |  |  |  |  |  |  | $ (0.17)us-gaap_EarningsPerShareDiluted | [1] | $ (0.20)us-gaap_EarningsPerShareDiluted | [1] | $ (0.23)us-gaap_EarningsPerShareDiluted | [1] |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 3,028,080 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |  |  |  | 3,181,464 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |  |  |  |  | 3,028,080 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |  | 3,181,464 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |  |  |  | 3,100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 5,750,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  |  |  | 5,000,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  |  |  |  | 5,750,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  | 5,000,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 3.35 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |  |  |  |  |  |  |  |  | $ 3.35 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |  |  |  |  |  |
[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, convertible preferred stock and convertible notes. At October 31, 2014, 2013 and 2012, there were options to purchase 3.0 million, 3.2 million and 3.1 million shares of common stock, respectively and at October 31, 2014 and 2013, there were warrants to purchase 5.75 million and 5.0 million, respectively shares of common stock that were not included in the calculation of diluted earnings per share as they would be antidiulutive. There were no warrants outstanding at October 31, 2012.

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