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DEBT - 7.5% Convertible Note (Details)		12 Months Ended
DEBT - 7.5% Convertible Note (Details)	Feb. 28, 2019 USD ($) $ / shares	Jul. 31, 2020 USD ($)	Jul. 31, 2019 USD ($)
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	100.00%
Issuance of nonvested common stock, value		$ 1,000,000	$ 700,000
Carrying amount of equity component (net of allocated debt issuance costs)		$ 8,200,000	8,200,000
Debt instrument, interest rate, effective percentage		27.80%
SPHG Holdings
Debt Instrument [Line Items]
Issuance of nonvested common stock, value	$ 1,000
Conversion ratio (shares)	0.4213
Initial Conversion price (in usd per share) \| $ / shares	$ 2.37
SPHG Holdings \| Convertible Senior Unsecured Note
Debt Instrument [Line Items]
Debt instrument stated percentage	7.50%
Debt instrument issued	$ 14,900,000.0
SPHG Holdings \| Convertible Notes Payable
Debt Instrument [Line Items]
Debt instrument issued		$ 14,940,000	$ 14,940,000
Period over which the unamotized discount will be amortized		44 months