Redeemable Preferred Stock - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended					6 Months Ended
	Mar. 31, 2005 shares	Apr. 30, 2020 USD ($) $ / shares shares	Apr. 30, 2020 CAD ($)	Jan. 31, 2020 USD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2019 CAD ($)	Apr. 30, 2020 USD ($) $ / shares shares	Apr. 30, 2020 CAD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2019 CAD ($)	Dec. 31, 2021 CAD ($)	Apr. 30, 2020 CAD ($) shares	Oct. 31, 2019 USD ($) shares	Oct. 31, 2019 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		$ 600					$ 600
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock, shares authorized | shares	105,875	105,875					105,875					105,875
Preferred stock, dividend rate, percentage	5.00%
Preferred stock, liquidation preference per share | $ / shares		$ 1,000.00					$ 1,000.00
Preferred stock, shares issued | shares		64,020					64,020					64,020	64,020	64,020
Preferred stock shares outstanding | shares		64,020					64,020					64,020	64,020	64,020
Temporary equity, carrying amount, attributable to parent		$ 59,857					$ 59,857						$ 59,857
Dividends, preferred stock, cash		$ 800		$ 2,400	$ 800		$ 3,200		$ 1,600
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
Return of capital and dividend payments			$ 300,000					$ 1,500,000		$ 300,000
Interest expense, other			1,000,000.0			$ 0.0		$ 1,800,000		$ 700,000
Carrying value of preferred shares, total		$ 17,300					$ 17,300					$ 24,100,000	$ 17,200	$ 22,700,000
Aggregate amount of dividend payment			500,000
Return of capital payments			$ 750,000
Dividend payment terms		quarterly	quarterly
Increase in dividend rate annually							15.00%	15.00%
Accrued and unpaid dividend obligation		$ 17,300					$ 17,300					24,100,000
Preferred stock, redemption amount		3,500					3,500					4,800,000
Loss resulted from revised fair value of preferred shares							200	$ 200,000
Dividends payable		$ 15,800					$ 15,800					$ 21,900,000
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member] | Scenario Forecast [Member]
Class Of Stock [Line Items]
Accrued and unpaid dividend obligation											$ 26,500,000
Preferred stock, redemption amount											$ 3,500,000
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member] | Minimum [Member]
Class Of Stock [Line Items]
Preferred stock, redemption date							Dec. 31, 2020	Dec. 31, 2020
Class A Cumulative Redeemable Exchangeable Preferred Shares [Member] | Maximum [Member]
Class Of Stock [Line Items]
Preferred stock, redemption date							Dec. 31, 2021	Dec. 31, 2021