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Equity (Details) - Schedule of grants of restricted shares of Class B common stock
6 Months Ended
Jan. 31, 2022
$ / shares
shares
Schedule of grants of restricted shares of Class B common stock [Abstract]  
Number of Non-vested Shares, Beginning Balance | shares 1,007,975
Weighted Average Grant Date Fair Value, Beginning balance | $ / shares $ 46.77
Number of Non-vested Shares, Granted | shares 91,268
Weighted Average Grant Date Fair Value, Granted | $ / shares $ 12.76
Number of Non-vested Shares, Vested | shares (77,474)
Weighted Average Grant Date Fair Value, Vested | $ / shares $ 16.03
Number of Non-vested Shares, Cancelled / Forfeited | shares (942,169)
Weighted Average Grant Date Fair Value, Cancelled / Forfeited | $ / shares $ (48.51)
Number of Non-vested Shares, Ending Balance | shares 79,600
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 23.68