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Basic and Diluted Net Income (Loss) per Share - Schedule of Net (Loss) Income per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2020
Basic net income (loss) per common share:        
Net income (loss) applicable to common stock $ 1,807 $ (5,009) $ (2,526) $ (11,561)
Effect of unvested, restricted stock (17) (17) (35) (34)
Numerator: Net income (loss) for basic EPS $ 1,790 $ (5,026) $ (2,561) $ (11,595)
Denominator: Weighted average common shares–basic (in shares) 17,461,000 17,634,000 17,429,000 17,602,000
Basic net income (loss) per common share (in dollars per share) $ 0.10 $ (0.29) $ (0.15) $ (0.66)
Diluted net income (loss) per common share:        
Numerator: Net income (loss) for diluted EPS $ 1,790 $ (5,026) $ (2,561) $ (11,595)
Denominator: Weighted average common shares–basic (in shares) 17,461,000 17,634,000 17,429,000 17,602,000
Effect of dilutive unvested, restricted stock and preferred stock (in shares) 0 0 0 0
Denominator: Weighted average common shares–diluted (in shares) 17,461,000 17,634,000 17,429,000 17,602,000
Diluted net income (loss) per common share (in dollars per share) $ 0.10 $ (0.29) $ (0.15) $ (0.66)