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Share - Based Compensation - Stock Option Plan (Details) - Stock Options
 12 Months Ended
Oct. 31, 2021
EquityInstruments
$ / shares
Oct. 31, 2020
EquityInstruments
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Balance, beginning of year (in shares) | EquityInstruments 620,666 707,333
Granted (i) | EquityInstruments 2,058,885 13,333
Forfeited | EquityInstruments (448,051) (100,000)
Exercised | EquityInstruments (325,371)  
Balance, end of period | EquityInstruments 1,906,129 620,666
Exercisable, end of period | EquityInstruments 596,666 491,375
Balance, beginning of year (in dollars per share) | $ / shares $ 7.50 $ 7.50
Granted (i) | $ / shares 6.12 7.50
Forfeited | $ / shares 9.51 7.50
Exercised | $ / shares 3.73  
Balance, end of period | $ / shares 6.51 7.50
Exercisable, end of period | $ / shares $ 7.55 $ 7.50