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Redeemable Preferred Stock - Class A Preferred Shares (Details) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 18, 2020 USD ($) | Dec. 18, 2020 CAD ($) | Oct. 31, 2022 CAD ($) | Oct. 31, 2021 USD ($) | Oct. 31, 2020 USD ($) shares | Oct. 31, 2020 CAD ($) | Dec. 31, 2020 CAD ($) | Oct. 31, 2020 CAD ($) shares
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Derivative liability, fair value, gross liability |  |  |  |  | $ 600 |  |  |
Loss on Series 1 preferred stock extinguishment | $ (900) |  |  | $ (934) | $ 475 |  |  |
Payoff Letter | Enbridge Inc. [Member] |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Accrued dividend |  |  |  |  |  |  | $ 23,100,000 |
Preferred stock redemption amount |  |  |  |  |  |  | 4,300,000 |
Carrying value of preferred shares, total |  |  |  |  |  |  | $ 27,400,000 |
Final payment to payoff | $ 21,500 | $ 27,400,000 |  |  |  |  |  |
Class A Preferred Shares |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock shares outstanding | shares |  |  |  |  | 1,000,000 |  |  | 1,000,000
Preferred stock, shares issued | shares |  |  |  |  | 1,000,000 |  |  | 1,000,000
Increase In Dividend Rate Annually |  |  | 15.00% |  |  |  |  |
Dividend payment terms |  |  | annual |  |  |  |  |
Return of capital payments |  |  | $ 750,000 |  |  |  |  |
Aggregate amount of dividend payment |  |  | $ 500,000 |  |  |  |  |
Accrued and unpaid dividend obligation |  |  |  |  | $ 17,700 |  |  | $ 23,400,000
Loss resulted from revised fair value of preferred shares |  |  |  |  | 200 | $ 200,000 |  |
Accrued dividend |  |  |  |  | 17,400 |  |  | 23,200,000
Preferred stock redemption amount |  |  |  |  | $ 3,200 |  |  | 4,300,000
Class A Preferred Shares | Minimum |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, redemption date |  |  | Dec. 31, 2020 |  |  |  |  |
Class A Preferred Shares | Maximum |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, redemption date |  |  | Dec. 31, 2021 |  |  |  |  |
Series 1 Preferred Shares |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Return of capital payments |  |  |  |  |  | 750,000 |  |
Aggregate amount of dividend payment |  |  |  |  |  | $ 500,000 |  |
Preferred stock, dividend rate, percentage |  |  |  |  | 1.25% | 1.25% |  |
Cumulative unpaid dividends |  |  |  |  | $ 12,500 |  |  |
Return of capital and dividend payments |  |  |  |  | 1,600 | $ 1,900,000 |  |
Interest expense, other |  |  |  |  | 2,900 | $ 4,000,000.0 |  |
Carrying value of preferred shares, total |  |  |  |  | $ 19,200 |  |  | $ 25,600,000

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