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Basic and Diluted Net (Loss) Income per Share - Schedule of Net (Loss) Income per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2019
Basic net (loss) income per common share:        
Net (loss) income applicable to common stock $ (5,009) $ 2,689 $ (11,561) $ (2,129)
Effect of unvested, restricted stock (17) (16) (34) (33)
Numerator: Net (loss) income for basic EPS $ (5,026) $ 2,673 $ (11,595) $ (2,162)
Denominator: Weighted average common shares–basic (in shares) 17,634,000 17,554,000 17,602,000 17,516,000
Basic net (loss) income per common share (in dollars per share) $ (0.29) $ 0.15 $ (0.66) $ (0.12)
Diluted net (loss) income per common share:        
Numerator: Net (loss) income for diluted EPS $ (5,026) $ 2,815 $ (11,595) $ (2,162)
Denominator: Weighted average common shares–basic (in shares) 17,634,000 17,554,000 17,602,000 17,516,000
Effect of dilutive unvested, restricted stock and preferred stock (in shares) 0 671,000 0 0
Denominator: Weighted average common shares–diluted (in shares) 17,634,000 18,225,000 17,602,000 17,516,000
Diluted net (loss) income per common share (in dollars per share) $ (0.29) $ 0.15 $ (0.66) $ (0.12)