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Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($)
3 Months Ended 6 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2019
Income Statement [Abstract]        
Related party costs $ 1,700,000 $ 2,300,000 $ 3,000,000 $ 4,100,000