DEBT - Additional Information (Details)		12 Months Ended
	Feb. 28, 2019 USD ($) $ / shares	Jul. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)	Mar. 16, 2022 USD ($)
Debt Instrument [Line Items]
Issuance of nonvested common stock, value		$ 700,000	$ 600,000
Total debt, net		$ 10,968,000	$ 9,147,000
Debt instrument, interest rate, effective percentage		27.80%	27.80%
Umpqua Revolver
Debt Instrument [Line Items]
Line of credit facility, maximum credit commitment		$ 12,500,000		$ 12,500,000
Line of credit facility, sublimit borrowing capacity		5,000,000		5,000,000
Revolving credit facility		600,000
Accretion of debt discount		300,000
MidCap Credit Facility
Debt Instrument [Line Items]
Line of credit facility, termination amount				$ 12,500,000
Credit facility, readily available borrowing capacity		11,900,000
Accretion of debt discount		200,000
SPHG Holdings
Debt Instrument [Line Items]
Issuance of nonvested common stock, value	$ 1,000
Conversion ratio (shares)	0.4212655
Initial Conversion price (in usd per share) | $ / shares	$ 2.37
7.50% Convertible Senior Note due March 1, 2024 | SPHG Holdings
Debt Instrument [Line Items]
Debt instrument stated percentage	7.50%
Principal amount of note	$ 14,900,000	$ 14,940,000	$ 14,940,000
Period over which the unamotized discount will be amortized		19 months
Total debt, net		$ 11,047,000	9,343,000
Accretion of debt discount		$ 2,840,000	$ 2,426,000