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Loss Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2015
Apr. 30, 2014
Earnings Per Share [Abstract]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 4,300,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 5,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 4,300,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 5,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Numerator [Abstract]        
Net Loss $ (9,997)us-gaap_ProfitLoss $ (16,039)us-gaap_ProfitLoss $ (14,151)us-gaap_ProfitLoss $ (26,854)us-gaap_ProfitLoss
Net Income (Loss) Attributable to Noncontrolling Interest 103us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 196us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 191us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 407us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Dividends, Preferred Stock (800)us-gaap_DividendsPreferredStock (800)us-gaap_DividendsPreferredStock (1,600)us-gaap_DividendsPreferredStock (1,600)us-gaap_DividendsPreferredStock
Net loss attributable to common shareholders $ (10,694)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (16,643)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (15,560)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (28,047)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Demoninator [Abstract]        
Weighted Average Number of Shares Outstanding, Diluted 291,026,184us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 243,289,058us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 288,260,464us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 221,609,975us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Weighted Average Number Diluted Shares Outstanding Adjustment 0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment [1] 0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment [1] 0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment [1] 0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment [1]
Weighted Average Number of Shares Outstanding, Basic 291,026,184us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 243,289,058us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 288,260,464us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 221,609,975us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Earnings Per Share, Basic $ (0.04)us-gaap_EarningsPerShareBasic $ (0.07)us-gaap_EarningsPerShareBasic $ (0.05)us-gaap_EarningsPerShareBasic $ (0.13)us-gaap_EarningsPerShareBasic
Earnings Per Share, Diluted $ (0.04)us-gaap_EarningsPerShareDiluted [1] $ (0.07)us-gaap_EarningsPerShareDiluted [1] $ (0.05)us-gaap_EarningsPerShareDiluted [1] $ (0.13)us-gaap_EarningsPerShareDiluted [1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 3,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 3,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 3,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 3,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
[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, unvested restricted stock awards, convertible preferred stock and warrants. As of April 30, 2015 and 2014, there were options to purchase 3.0 million and 3.1 million shares of common stock, respectively, and as of April 30, 2015 and 2014 and there were warrants to purchase 4.3 million and 5.0 million shares of common stock, respectively, which were excluded from the computation as they would be antidilutive.