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Basic and Diluted Net (Loss) Income per Share - Narrative (Details) - shares
shares in Thousands
3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Restricted Shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 114 162