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Short-term Investments - Summary of Short-term Investments (Detail) - USD ($)
Feb. 01, 2020
Nov. 02, 2019
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale Securities, Amortized Cost $ 167,930 $ 167,930
Available-for-sale Securities, Gross Unrealized Gains 342,643 353,353
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities, Estimated Fair Value $ 510,573 $ 521,283