DEBT - Additional Information (Details)			12 Months Ended
	Mar. 09, 2023 USD ($)	Feb. 28, 2019 USD ($) $ / shares	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	May 01, 2023 USD ($)	Mar. 13, 2023 USD ($)	Mar. 16, 2022 USD ($)
Debt Instrument [Line Items]
Issuance of nonvested common stock, value			$ 700,000	$ 700,000
Application of pushdown accounting					$ 13,000,000.0
Convertible Senior Note			12,461,000	11,047,000
Total debt, net			12,461,000	10,968,000
Umpqua Revolver
Debt Instrument [Line Items]
Line of credit facility, maximum credit commitment							$ 12,500,000
Line of credit facility, sublimit borrowing capacity							5,000,000
Unamortized debt issuance expense						$ 43,400
Revolving credit facility			600,000
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
SPHG Holdings
Debt Instrument [Line Items]
Issuance of nonvested common stock, value		$ 1,000
Conversion ratio (shares)		0.451356
Initial conversion price (in usd per share) | $ / shares		$ 22.16
7.50% Convertible Senior Note due September 1, 2024 | SPHG Holdings
Debt Instrument [Line Items]
Debt instrument stated percentage		7.50%
Principal amount of note			12,900,000	14,940,000
Debt instrument, repaid, principal	$ 1,000,000
Debt instrument, periodic payment, principal	1,000,000
Long-term debt, cash amendment fee amount	100,000
Long-term debt, derecognized debt discount amount	$ 200,000
Total debt, net			$ 12,500,000	$ 11,047,000
Debt instrument, interest rate, effective percentage	23.00%			27.80%