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Redeemable Preferred Stock - Additional Information (Details)									1 Months Ended		3 Months Ended								12 Months Ended
	Dec. 31, 2020 CAD ($)	Oct. 30, 2019 USD ($)	Aug. 15, 2019 USD ($)	May 15, 2019 USD ($)	Feb. 21, 2019 USD ($) TradingDay $ / shares	Dec. 01, 2018 USD ($) Installment	Nov. 01, 2017 USD ($) Installment	Mar. 31, 2005 shares	Jul. 03, 2019 $ / shares	Aug. 31, 2018 USD ($) $ / shares shares	Oct. 31, 2019 USD ($) $ / shares shares	Jul. 31, 2019 USD ($)	Apr. 30, 2019 USD ($)	Jan. 31, 2019 USD ($)	Oct. 31, 2018 USD ($) $ / shares shares	Jul. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)	Jan. 31, 2018 USD ($)	Oct. 31, 2019 USD ($) TradingDay $ / shares shares	Oct. 31, 2019 CAD ($) TradingDay shares	Oct. 31, 2018 USD ($) $ / shares shares	Oct. 31, 2018 CAD ($) shares	Oct. 31, 2017 USD ($) $ / shares shares	Oct. 31, 2017 CAD ($) shares	Dec. 31, 2021 CAD ($)	Oct. 31, 2019 CAD ($) $ / shares shares	Oct. 01, 2019 shares	May 23, 2019 $ / shares shares	May 22, 2019 $ / shares	May 08, 2019 shares	Jan. 02, 2019 $ / shares	Dec. 17, 2018 $ / shares	Dec. 03, 2018 $ / shares	Oct. 31, 2018 CAD ($) shares	Aug. 27, 2018 $ / shares	Aug. 26, 2018 $ / shares	Sep. 30, 2017 shares
Class Of Stock [Line Items]
Preferred stock, shares authorized | shares											250,000								250,000							250,000				250,000
Preferred stock, par value | $ / shares											$ 0.01								$ 0.01
Redemption value adjustment of net loss attributable to common stockholders														$ 8,600,000
Dividends declared																			$ 3,231,000		$ 3,200,000		$ 3,200,000
Derivative liability, fair value, gross liability											$ 600,000				$ 800,000				$ 600,000		$ 800,000
Common Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock, converted into number of common stock shares | shares																			3,914,218	3,914,218	1,496,368	1,496,368	9,058	9,058
Sale of common stock (in shares) | shares																			119,128,677	119,128,677	476,265	476,265	603,786	603,786
Waiver Agreement [Member]
Class Of Stock [Line Items]
Decrease in net loss attributable to common shareholders																	$ 500,000
Installment and Optional Conversions, Triggering Event Conversions of Series D Preferred Stock to Common Stock [Member]
Class Of Stock [Line Items]
Conversion of common stock, shares issued | shares																			62,040,496	62,040,496
Convertible preferred stock, reduction in carrying amount																			$ 31,200,000
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 D Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock sale of shares | shares										30,680					30,680						30,680													30,680
Redemption price percentage																			125.00%	125.00%
Preferred stock, initial convertible shares | shares										1,852,657
Conversion of stock conversion price | $ / shares										$ 16.56	$ 16.56				$ 16.56				$ 16.56		$ 16.56
Proceeds from Issuance of preferred stock										$ 25,300,000									$ 0		$ 25,317,000		$ 0
Preferred stock shares outstanding | shares															30,680						30,680						0							30,680
Temporary equity, carrying amount, attributable to parent															$ 27,392,000						$ 27,392,000
Conversion right description																			The Series D Preferred Shares were 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 $16.56 per share of common stock, subject to adjustment as provided in the Series D Certificate of Designation, including adjustments if the Company sold shares of common stock or equity securities convertible into or exercisable for shares of common stock, at prices below $16.56 per share, in certain types of transactions	The Series D Preferred Shares were 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 $16.56 per share of common stock, subject to adjustment as provided in the Series D Certificate of Designation, including adjustments if the Company sold shares of common stock or equity securities convertible into or exercisable for shares of common stock, at prices below $16.56 per share, in certain types of transactions
Number of consecutive trading days | TradingDay																			5	5
Threshold percentage of reserved for issuance of common stock issuable upon conversion																			150.00%	150.00%
Threshold amount to declare default amounts due on agreement											$ 750,000								$ 750,000
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
Reserving percentage of common stock to conversion of preferred shares						150.00%
Premium percentage of preferred stock installment amount						8.00%
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 could 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 made 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 could 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 made the redemption payment.
Preferred stock, redemption accretion value																			$ 3,800,000
Convertible preferred stock, converted into common stock | shares																			30,680	30,680
Preferred stock deemed dividends																			$ 6,000,000
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%
Common stock consecutive trading day | TradingDay																			10	10
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] | 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%	20.00%
Reduced conversion price | $ / shares									$ 0.14
Series D Preferred Stock [Member] | Minimum [Member] | Convertible Preferred Offering [Member]
Class Of Stock [Line Items]
Conversion terms, beneficial ownership limitation, percentage																			4.99%	4.99%
Conversion terms, prior receiving beneficial ownership, percentage																			20.00%	20.00%
Series D Preferred Stock [Member] | Maximum [Member]
Class Of Stock [Line Items]
Reduced conversion price | $ / shares									$ 0.61
Series D Preferred Stock [Member] | Maximum [Member] | Convertible Preferred Offering [Member]
Class Of Stock [Line Items]
Conversion terms, beneficial ownership increase, percentage																			9.99%	9.99%
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock sale of shares | shares															8,992						8,992													8,992			33,500
Redemption price percentage																			125.00%	125.00%
Conversion of stock conversion price | $ / shares															$ 18.00						$ 18.00		$ 22.08												$ 18.00	$ 22.08
Proceeds from Issuance of preferred stock																			$ 0		$ 0		$ 27,866,000
Preferred stock shares outstanding | shares															8,992						8,992							0						8,992
Temporary equity, carrying amount, attributable to parent															$ 7,480,000						$ 7,480,000
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 could 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 could 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.
Convertible preferred stock, converted into common stock | shares																			8,992	8,992	24,308	24,308
Convertible preferred stock, reduction in carrying amount																			$ 15,500,000
Preferred stock deemed dividends																			$ 1,500,000		$ 9,600,000
Preferred stock redemption terms																			Installment Payments Prior to Execution of Waiver Agreement. On November 1, 2017 and on the 16th day and 1st day of each calendar month thereafter until March 1, 2019, subject to extension in certain circumstances (the “Series C Maturity Date”), inclusive, the Company was required to redeem the stated value of Series C Preferred Shares in 33 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 had 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 could elect to accelerate the conversion of Series C Preferred Shares at the then applicable installment conversion price, provided that the holders could not elect to effect any such acceleration during such installment period if either (a) in the aggregate, all the accelerations in such installment period would exceed the sum of three other Series C Installment Amounts, or (b) the number of Series C Preferred Shares subject to prior accelerations would exceed in the aggregate 12 Series C Installment Amounts.	Installment Payments Prior to Execution of Waiver Agreement. On November 1, 2017 and on the 16th day and 1st day of each calendar month thereafter until March 1, 2019, subject to extension in certain circumstances (the “Series C Maturity Date”), inclusive, the Company was required to redeem the stated value of Series C Preferred Shares in 33 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 had 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 could elect to accelerate the conversion of Series C Preferred Shares at the then applicable installment conversion price, provided that the holders could not elect to effect any such acceleration during such installment period if either (a) in the aggregate, all the accelerations in such installment period would exceed the sum of three other Series C Installment Amounts, or (b) the number of Series C Preferred Shares subject to prior accelerations would exceed in the aggregate 12 Series C Installment Amounts.
Adjusted conversion price | $ / shares															$ 18.00						$ 18.00										$ 5.16	$ 6.00	$ 6.96
Convertible preferred stock, converted into number of common stock shares | shares																			3,914,218	3,914,218
Preferred Stock, Liquidation Preference, Value															$ 8,992,000						$ 8,992,000
Series C Preferred Stock [Member] | Waiver Agreement [Member]
Class Of Stock [Line Items]
Temporary equity, carrying amount, attributable to parent					$ 13,500,000
Conversion right description																			Under the Waiver Agreement, the conversion price of the Series C Preferred Stock was stated to be the lowest of (i) $4.45, (ii) 85% of the lowest closing bid price of the Company’s common stock during the period beginning on and including the fifth trading day prior to the date on which the applicable conversion notice was delivered to the Company and ending on and including the date on which the applicable conversion notice was delivered to the Company, and (iii) 85% of the quotient of (A) the sum of the five lowest VWAPs of the Company’s common stock during the 20 consecutive trading day period ending on and including the trading day immediately preceding the applicable conversion date divided by (B) five.	Under the Waiver Agreement, the conversion price of the Series C Preferred Stock was stated to be the lowest of (i) $4.45, (ii) 85% of the lowest closing bid price of the Company’s common stock during the period beginning on and including the fifth trading day prior to the date on which the applicable conversion notice was delivered to the Company and ending on and including the date on which the applicable conversion notice was delivered to the Company, and (iii) 85% of the quotient of (A) the sum of the five lowest VWAPs of the Company’s common stock during the 20 consecutive trading day period ending on and including the trading day immediately preceding the applicable conversion date divided by (B) five.
Percentage of lowest volume weighted average price of common stock considered as conversion price					85.00%
Number of consecutive trading days | TradingDay					20
Percentage of shares will receive upon conversion prior to execution of waiver agreement					25.00%
Conversion price of preferred stock | $ / shares					$ 4.45
Percentage of conversion price of common stock					125.00%
Convertible preferred stock embedded conversion amount													$ 6,600,000
Change in fair value of convertible preferred stock					$ (600,000)
Percentage of stated redemption value adjustment																			108.00%	108.00%
Stated redemption value corresponding charge to common shareholders														8,600,000
Series C Preferred Stock [Member] | Waiver Agreement [Member] | Volatility [Member]
Class Of Stock [Line Items]
Convertible preferred stock, measurement input					75.00%
Series C Preferred Stock [Member] | Waiver Agreement [Member] | Discount Rate [Member]
Class Of Stock [Line Items]
Convertible preferred stock, measurement input					20.00%
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] | Convertible Preferred Offering [Member]
Class Of Stock [Line Items]
Conversion of stock conversion price | $ / shares																																			$ 22.08
Proceeds from Issuance of preferred stock																							$ 27,900,000
Conversion right description																			Conversion Rights. The Series C Preferred Shares were convertible into shares of common stock, subject to the beneficial ownership limitations provided in the Certificate of Designations, Preferences and Rights of the Series C Preferred Stock of the Company (the “Series C Certificate of Designations”), at a conversion price equal to $22.08 per share. The conversion price was subject to adjustment as provided in the Series C Certificate of Designations, including adjustments if the Company sold 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 would have been 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 were 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 had the right to increase its maximum percentage up to 9.99% upon 60 days’ notice to the Company.	Conversion Rights. The Series C Preferred Shares were convertible into shares of common stock, subject to the beneficial ownership limitations provided in the Certificate of Designations, Preferences and Rights of the Series C Preferred Stock of the Company (the “Series C Certificate of Designations”), at a conversion price equal to $22.08 per share. The conversion price was subject to adjustment as provided in the Series C Certificate of Designations, including adjustments if the Company sold 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 would have been 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 were 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 had 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
Series C Preferred Stock [Member] | Convertible Preferred Offering [Member] | Waiver Agreement [Member]
Class Of Stock [Line Items]
Convertible preferred stock, reduction in carrying amount																			$ 6,600,000
Series C Preferred Stock [Member] | Minimum [Member]
Class Of Stock [Line Items]
Adjusted conversion price | $ / shares																												$ 1.27
Series C Preferred Stock [Member] | Minimum [Member] | Convertible Preferred Offering [Member]
Class Of Stock [Line Items]
Conversion terms, beneficial ownership limitation, percentage																			8.99%	8.99%
Series C Preferred Stock [Member] | Maximum [Member]
Class Of Stock [Line Items]
Adjusted conversion price | $ / shares																													$ 4.45
Series C Preferred Stock [Member] | Maximum [Member] | Convertible Preferred Offering [Member]
Class Of Stock [Line Items]
Conversion terms, beneficial ownership increase, percentage																			9.99%	9.99%
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								105,875
Preferred stock sale of shares | shares								105,875			64,020				64,020				64,020		64,020					64,020								64,020
Redemption price percentage								5.00%
Preferred stock shares outstanding | shares											64,020				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		$ 59,857,000
Number of consecutive trading days | TradingDay																			30	30
Preferred stock, liquidation preference per share | $ / shares											$ 1,000.00				$ 1,000.00				$ 1,000.00		$ 1,000.00
Preferred stock, dividends per share, declared | $ / shares																			$ 50.00
Dividends, preferred stock, cash																			$ 1,600,000		$ 3,200,000		$ 3,200,000
Cumulative unpaid dividends											$ 1,600,000				$ 0				1,600,000		0
Dividends declared			$ 0	$ 0							821,000	$ 810,000	$ 800,000	$ 800,000	800,000	$ 800,000	$ 800,000	$ 800,000	3,231,000		3,200,000		$ 3,200,000
Dividends payment date		Nov. 15, 2019	Aug. 15, 2019	May 15, 2019
Aggregate amount of dividend payment		$ 2,400,000	$ 1,600,000	$ 1,600,000
Preferred stock, dividend rate, percentage			5.00%	5.00%
Preferred stock failed to pay dividend payments multiplier percentage			0.0625%	0.0625%
Payment on junior shares											0								0
Preferred Stock, Liquidation Preference, Value											$ 64,020,000				64,020,000				$ 64,020,000		64,020,000
Shares of common stock issued upon conversion | shares											0.591								0.591							0.591
Stock conversion price | $ / shares											$ 1,692.00								$ 1,692.00
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%
Preferred stock, voting rights																			no voting rights	no voting rights
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%
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member]
Class Of Stock [Line Items]
Preferred stock shares outstanding | shares											1,000,000								1,000,000							1,000,000
Cumulative unpaid dividends																										$ 12,500,000
Aggregate amount of dividend payment																				$ 500,000
Preferred stock, dividend rate, percentage																			1.25%	1.25%
Return of capital payments																				$ 750,000
Dividend payment terms																			quarterly	quarterly
Percent calculated on weighted average price of common stock																			the number of shares of common stock was to be determined by dividing the cash dividend obligation by 95% of the volume weighted average price in U.S. dollars	the number of shares of common stock was to be 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																										$ 19,974.24
Return of capital and dividend payments																				$ 300,000		$ 1,300,000		$ 1,300,000
Interest expense, other																				$ 3,000,000		$ 2,800,000		$ 2,600,000
Carrying value of preferred shares, total											$ 17,200,000				$ 15,900,000				$ 17,200,000		$ 15,900,000					$ 22,700,000								$ 20,900,000
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member] | Scenario Forecast [Member]
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	5.00%
Accrued and unpaid dividend obligation	$ 21,100,000																								$ 26,500,000
Preferred stock, redemption amount	$ 4,400,000																								$ 3,500,000
Assumed Class A Cumulative Redeemable Exchangeable Preferred Shares [Member]
Class Of Stock [Line Items]
Sale of stock price per share | $ / shares											$ 0.24								$ 0.24
Exchange rate																										1.32
Sale of common stock (in shares) | shares																			1,234,279	1,234,279

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