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Redeemable Preferred Stock - Additional Information (Details)
 3 Months Ended 12 Months Ended
Dec. 01, 2018
USD ($)
Installment
Aug. 27, 2018
$ / shares
shares
Nov. 01, 2017
USD ($)
Installment
Oct. 31, 2018
USD ($)
$ / shares
shares
Jul. 31, 2018
USD ($)
Apr. 30, 2018
USD ($)
Jan. 31, 2018
USD ($)
Oct. 31, 2018
USD ($)
TradingDay
$ / shares
shares
Oct. 31, 2018
CAD ($)
TradingDay
shares
Oct. 31, 2017
USD ($)
$ / shares
shares
Oct. 31, 2017
CAD ($)
shares
Oct. 31, 2016
USD ($)
shares
Oct. 31, 2016
CAD ($)
shares
Dec. 31, 2020
CAD ($)
Jan. 02, 2019
$ / shares
Oct. 31, 2018
CAD ($)
$ / shares
shares
Aug. 29, 2018
shares
Aug. 26, 2018
$ / shares
Oct. 31, 2017
CAD ($)
shares
Class Of Stock [Line Items]                                      
Preferred stock, shares authorized | shares       250,000       250,000               250,000      
Preferred stock, par value | $ / shares       $ 0.01       $ 0.01                      
Derivative liability, fair value, gross liability       $ 800,000       $ 800,000   $ 800,000                  
Common Stock [Member]                                      
Class Of Stock [Line Items]                                      
Sale of common stock (in shares) | shares               5,715,180 5,715,180 7,245,430 7,245,430 6,023,372 6,023,372            
Installment Conversion of Series C Preferred Stock to Common Stock [Member]                                      
Class Of Stock [Line Items]                                      
Convertible preferred stock, reduction in carrying amount               $ 20,200,000                      
Series B Preferred Stock [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, shares authorized | shares       105,875       105,875   105,875           105,875     105,875
Preferred stock, dividend rate, percentage               5.00% 5.00%                    
Preferred stock sale of shares | shares       64,020       64,020   64,020           64,020     64,020
Number of consecutive trading days | TradingDay               30 30                    
Preferred stock shares outstanding | shares       64,020       64,020   64,020           64,020     64,020
Temporary equity, carrying amount, attributable to parent       $ 59,857,000       $ 59,857,000   $ 59,857,000                  
Preferred shares, dividends declared | $ / shares               $ 50.00                      
Preferred shares voting rights               no voting rights no voting rights                    
Preferred stock, liquidation preference per share | $ / shares       $ 1,000.00       $ 1,000.00   $ 1,000.00                  
Dividends, preferred stock, cash               $ 3,200,000   $ 3,200,000   $ 3,200,000              
Cumulative unpaid dividends       $ 0       0   0                  
Payment on junior shares       0       0                      
Preferred Stock, Liquidation Preference, Value       $ 64,020,000       $ 64,020,000   64,020,000                  
Shares of common stock issued upon conversion | shares       7.0922       7.0922               7.0922      
Stock conversion price | $ / shares       $ 141.00       $ 141.00                      
Percent of conversion price to exceed to exercise conversion right       150.00%       150.00%               150.00%      
Number of trading days | TradingDay               20 20                    
Percentage of voting rights       50.00%       50.00%               50.00%      
Consecutive number of years               2 years 2 years                    
Percentage of aggregate voting power               100.00% 100.00%                    
Percentage of conversion price               105.00% 105.00%                    
Discount on market price of shares of common stock       5.00%       5.00%               5.00%      
Series B Preferred Stock [Member] | Common Stock [Member]                                      
Class Of Stock [Line Items]                                      
Number of consecutive trading days | TradingDay               10 10                    
Number of trading days | TradingDay               5 5                    
Series B Preferred Stock [Member] | Minimum [Member]                                      
Class Of Stock [Line Items]                                      
Percentage of consideration excluding cash payments for fractional shares               90.00% 90.00%                    
Series D Preferred Stock [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, dividend rate, percentage               15.00% 15.00%                    
Preferred stock sale of shares | shares                                 30,680    
Conversion of stock conversion price | $ / shares       $ 1.38       $ 1.38                      
Proceeds from Issuance of preferred stock               $ 25,317,000   $ 0   0              
Conversion right description               The Series D Preferred Shares are convertible into shares of the Company’s common stock, subject to the requirements of Nasdaq Listing Rule 5635(d), and the beneficial ownership limitation provided in the Series D Certificate of Designation, at a conversion price equal to $1.38 per share of common stock, subject to adjustment as provided in the Series D Certificate of Designation, including adjustments if the Company sells shares of common stock or equity securities convertible into or exercisable for shares of common stock, at prices below $1.38 per share, in certain types of transactions. The Series D Preferred Shares are convertible into shares of the Company’s common stock, subject to the requirements of Nasdaq Listing Rule 5635(d), and the beneficial ownership limitation provided in the Series D Certificate of Designation, at a conversion price equal to $1.38 per share of common stock, subject to adjustment as provided in the Series D Certificate of Designation, including adjustments if the Company sells shares of common stock or equity securities convertible into or exercisable for shares of common stock, at prices below $1.38 per share, in certain types of transactions.                    
Threshold percentage of reserved for issuance of common stock issuable upon conversion               150.00% 150.00%                    
Common stock consecutive trading day | TradingDay               10 10                    
Repayment percentage of installment amount               108.00% 108.00%                    
Preferred shares, triggering event redemption terms               Redemption Upon a Triggering Event. In the event of a triggering event (as defined in the Series D Certificate of Designation and summarized above), the holders of Series D Preferred Shares may require the Company to redeem such Series D Preferred Shares in cash at a price equal to the greater of (a) 125% of the stated value of the Series D Preferred Shares being redeemed plus accrued dividends, if any, and (b) the market value of the number of shares issuable on conversion of the Series D Preferred Shares, valued at the greatest closing sales price during the period from the date immediately before the triggering event through the date the Company makes the redemption payment. Redemption Upon a Triggering Event. In the event of a triggering event (as defined in the Series D Certificate of Designation and summarized above), the holders of Series D Preferred Shares may require the Company to redeem such Series D Preferred Shares in cash at a price equal to the greater of (a) 125% of the stated value of the Series D Preferred Shares being redeemed plus accrued dividends, if any, and (b) the market value of the number of shares issuable on conversion of the Series D Preferred Shares, valued at the greatest closing sales price during the period from the date immediately before the triggering event through the date the Company makes the redemption payment.                    
Redemption pice percentage               125.00% 125.00%                    
Preferred shares, change of control, redemption terms               Redemption Upon a Change of Control. In the event of a change of control, as defined in the Series D Certificate of Designation, the holders of Series D Preferred Shares can force redemption at a price equal to the greater of (a) the conversion amount to be redeemed multiplied by 125%, (b) the product of (i) the conversion amount being redeemed multiplied by (ii) the quotient determined by dividing (A) the greatest closing sale price of the common stock on any Trading Day during the period commencing immediately preceding the earlier to occur of (1) the consummation of the applicable change of control and (2) the public announcement of such change of control and ending on the date such holder delivers the change of control redemption notice, by (B) the conversion price then in effect and (c) the product of (i) the conversion amount being redeemed multiplied by (ii) the quotient determined by dividing (A) the aggregate value of the cash and non-cash consideration per share of common stock being paid to holders of common stock in the change of control transaction by (B) the conversion price then in effect. Redemptions of the Series D Preferred Shares required under the Series D Certificate of Designation in connection with a change of control will have priority over payments to all other stockholders of the Company in connection with such change of control. Redemption Upon a Change of Control. In the event of a change of control, as defined in the Series D Certificate of Designation, the holders of Series D Preferred Shares can force redemption at a price equal to the greater of (a) the conversion amount to be redeemed multiplied by 125%, (b) the product of (i) the conversion amount being redeemed multiplied by (ii) the quotient determined by dividing (A) the greatest closing sale price of the common stock on any Trading Day during the period commencing immediately preceding the earlier to occur of (1) the consummation of the applicable change of control and (2) the public announcement of such change of control and ending on the date such holder delivers the change of control redemption notice, by (B) the conversion price then in effect and (c) the product of (i) the conversion amount being redeemed multiplied by (ii) the quotient determined by dividing (A) the aggregate value of the cash and non-cash consideration per share of common stock being paid to holders of common stock in the change of control transaction by (B) the conversion price then in effect. Redemptions of the Series D Preferred Shares required under the Series D Certificate of Designation in connection with a change of control will have priority over payments to all other stockholders of the Company in connection with such change of control.                    
Preferred stock, participation rights               Limited Voting Rights. The holders of Series D Preferred Shares have no voting rights, except as required by law; provided, however, that any amendment to the Company’s certificate of incorporation or bylaws or the Series D Certificate of Designation that adversely affects the powers, preferences and rights of the Series D Preferred Stock requires the approval of the holders of a majority of the Series D Preferred Shares then outstanding. Participation Rights. Until August 29, 2019, the holders of the Series D Preferred Shares have the right to receive notice of and to participate in any offering, issuance or sale of equity or equity-equivalent securities by the Company or its subsidiaries, other than issuances under certain employee benefit plans, upon the conversion of certain options or other convertible securities, or pursuant to certain acquisitions or strategic transactions. Pursuant to such participation rights, the Company must offer to issue and sell to such holders at least 35% of the offered securities. Limited Voting Rights. The holders of Series D Preferred Shares have no voting rights, except as required by law; provided, however, that any amendment to the Company’s certificate of incorporation or bylaws or the Series D Certificate of Designation that adversely affects the powers, preferences and rights of the Series D Preferred Stock requires the approval of the holders of a majority of the Series D Preferred Shares then outstanding. Participation Rights. Until August 29, 2019, the holders of the Series D Preferred Shares have the right to receive notice of and to participate in any offering, issuance or sale of equity or equity-equivalent securities by the Company or its subsidiaries, other than issuances under certain employee benefit plans, upon the conversion of certain options or other convertible securities, or pursuant to certain acquisitions or strategic transactions. Pursuant to such participation rights, the Company must offer to issue and sell to such holders at least 35% of the offered securities.                    
Temporary equity, carrying amount, attributable to parent       $ 27,392,000       $ 27,392,000                      
Preferred Stock, Liquidation Preference, Value       $ 30,680,000       $ 30,680,000                      
Series D Preferred Stock [Member] | Volume Weighted Average Price [Member]                                      
Class Of Stock [Line Items]                                      
Percentage of common stock on trading day immediately prior to applicable installment date               87.50% 87.50%                    
Series D Preferred Stock [Member] | Arithmetic Average Of Two Lowest Volume Weighted Average Price [Member]                                      
Class Of Stock [Line Items]                                      
Percentage of common stock on trading day immediately prior to applicable installment date               87.50% 87.50%                    
Series D Preferred Stock [Member] | Subsequent Event [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock redemption maturity date Mar. 01, 2020                                    
Number of preferred stock redemption equal installments | Installment 31                                    
Redemption of preferred shares in installments, each installment amount $ 989,677                                    
Series D Preferred Stock [Member] | Minimum [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, conversion basis, stock issuance, threshold percentage of outstanding voting stock   20.00%           20.00% 20.00%                    
Preferred stock, percentage of offered securities               35.00% 35.00%                    
Series D Preferred Stock [Member] | Convertible Preferred Offering [Member]                                      
Class Of Stock [Line Items]                                      
Conversion terms, increase beneficial ownership limitation percentage upon notice periods               60 days 60 days                    
Percentage of lowest volume weighted average price of common stock considered as conversion price               85.00% 85.00%                    
Series D Preferred Stock [Member] | Convertible Preferred Offering [Member] | Minimum [Member]                                      
Class Of Stock [Line Items]                                      
Conversion terms, beneficial ownership limitation, percentage               4.99% 4.99%                    
Conversion terms, prior receiving beneficial ownership, percentage               19.90% 19.90%                    
Series D Preferred Stock [Member] | Convertible Preferred Offering [Member] | Maximum [Member]                                      
Class Of Stock [Line Items]                                      
Conversion terms, beneficial ownership increase, percentage               9.99% 9.99%                    
Series D Preferred Stock [Member] | Convertible Preferred Offering [Member] | Oppenheimer & Co [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, par value | $ / shares   $ 0.01                                  
Preferred stock sale of shares | shares   30,680                                  
Preferred stock, initial convertibel shares | shares   22,231,884                                  
Conversion of stock conversion price | $ / shares   $ 1.38                                  
Series C Preferred Stock [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, dividend rate, percentage               15.00% 15.00%                    
Conversion of stock conversion price | $ / shares   1.50   $ 1.50       $ 1.50   $ 1.84               $ 1.84  
Proceeds from Issuance of preferred stock               $ 0   $ 27,866,000   0              
Preferred stock redemption maturity date               Mar. 01, 2019 Mar. 01, 2019                    
Number of preferred stock redemption equal installments | Installment     33                                
Redemption of preferred shares in installments, each installment amount     $ 1,000,000                                
Common stock consecutive trading day | TradingDay               10 10                    
Repayment percentage of installment amount               108.00% 108.00%                    
Preferred shares, triggering event redemption terms               Redemption. In the event of a triggering event, as defined in the Series C Certificate of Designations, the holders of the Series C Preferred Shares can force redemption at a price equal to the greater of (a) the conversion amount to be redeemed multiplied by 125% and (b) the product of (i) the conversion rate with respect to the conversion amount in effect at such time as such holder delivers a triggering event redemption notice multiplied by (ii) the greatest closing sale price of the common stock on any trading day during the period commencing on the date immediately preceding such triggering event and ending on the date the Company makes the entire payment required. Redemption. In the event of a triggering event, as defined in the Series C Certificate of Designations, the holders of the Series C Preferred Shares can force redemption at a price equal to the greater of (a) the conversion amount to be redeemed multiplied by 125% and (b) the product of (i) the conversion rate with respect to the conversion amount in effect at such time as such holder delivers a triggering event redemption notice multiplied by (ii) the greatest closing sale price of the common stock on any trading day during the period commencing on the date immediately preceding such triggering event and ending on the date the Company makes the entire payment required.                    
Redemption pice percentage               125.00% 125.00%                    
Temporary equity, carrying amount, attributable to parent       $ 7,480,000       $ 7,480,000   27,700,000                  
Convertible preferred stock, converted into common stock | shares               24,308 24,308                    
Adjusted conversion price | $ / shares       $ 1.50       $ 1.50                      
Preferred stock deemed dividends       $ 958,000 $ 939,000 $ 4,199,000 $ 3,463,000 $ 9,559,000   0   $ 0              
Preferred stock redemption terms               Installment Payments. On November 1, 2017 and on the sixteenth day and first day of each calendar month thereafter until March 1, 2019, subject to extension in certain circumstances (the “Series C Maturity Date”), inclusive, the Company will redeem the stated value of Series C Preferred Shares in thirty-three equal installments of approximately $1.0 million (each bimonthly amount, a “Series C Installment Amount” and the date of each such payment, a “Series C Installment Date”). The holders will have the ability to defer installment payments, but not beyond the Series C Maturity Date. In addition, during each period commencing on the 11th trading day prior to a Series C Installment Date and prior to the immediately subsequent Series C Installment Date, the holders may elect to accelerate the conversion of Series C Preferred Shares at the then applicable installment conversion price, provided that the holders may not elect to effect any such acceleration during such installment period if either (a) in the aggregate, all the accelerations in such installment period exceed the sum of three other Series C Installment Amounts, or (b) the number of Series C Preferred Shares subject to prior accelerations exceeds in the aggregate twelve Series C Installment Amounts. Installment Payments. On November 1, 2017 and on the sixteenth day and first day of each calendar month thereafter until March 1, 2019, subject to extension in certain circumstances (the “Series C Maturity Date”), inclusive, the Company will redeem the stated value of Series C Preferred Shares in thirty-three equal installments of approximately $1.0 million (each bimonthly amount, a “Series C Installment Amount” and the date of each such payment, a “Series C Installment Date”). The holders will have the ability to defer installment payments, but not beyond the Series C Maturity Date. In addition, during each period commencing on the 11th trading day prior to a Series C Installment Date and prior to the immediately subsequent Series C Installment Date, the holders may elect to accelerate the conversion of Series C Preferred Shares at the then applicable installment conversion price, provided that the holders may not elect to effect any such acceleration during such installment period if either (a) in the aggregate, all the accelerations in such installment period exceed the sum of three other Series C Installment Amounts, or (b) the number of Series C Preferred Shares subject to prior accelerations exceeds in the aggregate twelve Series C Installment Amounts.                    
Preferred shares voting rights               no voting rights no voting rights                    
Preferred Stock, Liquidation Preference, Value       $ 8,992,000       $ 8,992,000   $ 33,300,000                  
Series C Preferred Stock [Member] | Volume Weighted Average Price [Member]                                      
Class Of Stock [Line Items]                                      
Percentage of common stock on trading day immediately prior to applicable installment date               87.50% 87.50%                    
Series C Preferred Stock [Member] | Arithmetic Average Of Two Lowest Volume Weighted Average Price [Member]                                      
Class Of Stock [Line Items]                                      
Percentage of common stock on trading day immediately prior to applicable installment date               87.50% 87.50%                    
Series C Preferred Stock [Member] | Subsequent Event [Member]                                      
Class Of Stock [Line Items]                                      
Adjusted conversion price | $ / shares                             $ 0.434        
Series C Preferred Stock [Member] | Convertible Preferred Offering [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock sale of shares | shares       8,992       8,992   33,300           8,992     33,300
Conversion of stock conversion price | $ / shares   $ 1.50   $ 1.50       $ 1.50                      
Proceeds from Issuance of preferred stock                   $ 27,900,000                  
Conversion right description                   Conversion Rights. As of October 31, 2018, the Series C Preferred Shares were convertible into shares of common stock subject to the beneficial ownership limitations provided in the Series C Certificate of Designations, at a conversion price equal to $1.50 per share. The conversion price is subject to adjustment as provided in the Series C Certificate of Designations, including adjustments if the Company sells shares of common stock or equity securities convertible into or exercisable for shares of common stock, at variable prices below the conversion price then in effect. In the event of a triggering event, as defined in the Series C Certificate of Designations, the Series C Preferred Shares are convertible into shares of common stock at a conversion price equal to the lower of the conversion price then in effect and 85% of the lowest VWAP of the common stock of the five trading days immediately prior to delivery of the applicable conversion notice. The holders will be prohibited from converting Series C Preferred Shares into shares of common stock if, as a result of such conversion, such holder, together with its affiliates, would own more than 8.99% of the total number of shares of common stock then issued and outstanding. Each holder has the right to increase its maximum percentage up to 9.99% upon 60 days’ notice to the Company. Conversion Rights. As of October 31, 2018, the Series C Preferred Shares were convertible into shares of common stock subject to the beneficial ownership limitations provided in the Series C Certificate of Designations, at a conversion price equal to $1.50 per share. The conversion price is subject to adjustment as provided in the Series C Certificate of Designations, including adjustments if the Company sells shares of common stock or equity securities convertible into or exercisable for shares of common stock, at variable prices below the conversion price then in effect. In the event of a triggering event, as defined in the Series C Certificate of Designations, the Series C Preferred Shares are convertible into shares of common stock at a conversion price equal to the lower of the conversion price then in effect and 85% of the lowest VWAP of the common stock of the five trading days immediately prior to delivery of the applicable conversion notice. The holders will be prohibited from converting Series C Preferred Shares into shares of common stock if, as a result of such conversion, such holder, together with its affiliates, would own more than 8.99% of the total number of shares of common stock then issued and outstanding. Each holder has the right to increase its maximum percentage up to 9.99% upon 60 days’ notice to the Company.                
Conversion terms, increase beneficial ownership limitation percentage upon notice periods                   60 days 60 days                
Percentage of lowest volume weighted average price of common stock considered as conversion price                   85.00% 85.00%                
Aggregate number of shares issued | shares                   33,500 33,500                
Sale of stock price per share | $ / shares                   $ 0.01                  
Preferred stock, stated value per share | $ / shares                   1,000                  
Preferred stock price per share | $ / shares                   $ 895.52                  
Gross proceeds from sale of preferred stock                   $ 30,000,000                  
Preferred stock shares outstanding | shares       8,992       8,992   33,300           8,992     33,300
Temporary equity, carrying amount, attributable to parent       $ 7,500,000       $ 7,500,000   $ 27,700,000                  
Series C Preferred Stock [Member] | Convertible Preferred Offering [Member] | Minimum [Member]                                      
Class Of Stock [Line Items]                                      
Conversion terms, beneficial ownership limitation, percentage                   8.99% 8.99%                
Series C Preferred Stock [Member] | Convertible Preferred Offering [Member] | Maximum [Member]                                      
Class Of Stock [Line Items]                                      
Conversion terms, beneficial ownership increase, percentage                   9.99% 9.99%                
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member]                                      
Class Of Stock [Line Items]                                      
Preferred stock, dividend rate, percentage               1.25% 1.25%                    
Preferred stock shares outstanding | shares       1,000,000       1,000,000               1,000,000      
Cumulative unpaid dividends       $ 12,500,000       $ 12,500,000                      
Payments of dividends                 $ 500,000                    
Return of capital payments                 750,000                    
Return of capital and dividend payments                 1,300,000   $ 1,300,000   $ 1,300,000            
Interest expense, other                 $ 2,800,000   $ 2,600,000   $ 2,400,000            
Carrying value of preferred shares, total       $ 15,900,000       $ 15,900,000   $ 15,100,000           $ 20,900,000     $ 19,400,000
Percent calculated on weighted average price of common shares               the number of common shares is determined by dividing the cash dividend obligation by 95% of the volume weighted average price in U.S. dollars the number of common shares is determined by dividing the cash dividend obligation by 95% of the volume weighted average price in U.S. dollars                    
Percent of common stock price               95.00% 95.00%                    
Preferred stock, redemption price per share | $ / shares                               $ 25.00      
Preferred stock exchange right per common stock share                               $ 1,664.52      
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member] | Scenario, Forecast [Member]                                      
Class Of Stock [Line Items]                                      
Accrued and unpaid dividend obligation                           $ 21,100,000          
Preferred stock, redemption amount                           $ 4,400,000          
Assumed Class A Cumulative Redeemable Exchangeable Preferred Shares [Member]                                      
Class Of Stock [Line Items]                                      
Sale of stock price per share | $ / shares       $ 0.85       $ 0.85                      
Exchange rate                               1.31      
Sale of common stock (in shares) | shares               4,192,221 4,192,221