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Sales of Class B Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Nov. 30, 2020	Feb. 05, 2020	Oct. 31, 2020	Jan. 31, 2020
Sales of Class B Common Stock (Details) [Line Items]
Direct offering shares		1,734,459
Shares issued				1,657,813
Shares issued price per share				$ 1.28
Weighted average discount rate				20.00%
Sale of common stock, description			certain Company insiders purchased an additional 76,646 shares at a purchase price of $1.67 per share, the closing price on February 3, 2020. In connection with this offering, the Company incurred a total issuance costs of $141,000.
Sale of stock	$ 5,000
Class B common stock [Member]
Sales of Class B Common Stock (Details) [Line Items]
Gross proceeds		$ 2,250

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