Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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DEBT - 5.25% Convertible Senior Note (Details) - USD ($)	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Mar. 01, 2019	Feb. 28, 2019	Mar. 18, 2014
Debt Instrument [Line Items]
Debt instrument stated percentage			5.25%
Convertible notes payable		$ 64,500,000	$ 65,600,000	$ 65,600,000
Convertible Notes payable	$ 0	50,274,000
Debt instrument, interest rate, effective percentage	18.47%
5.25% Convertible Senior Notes Due 2019
Debt Instrument [Line Items]
Principal amount of notes held					$ 100,000,000
Debt instrument stated percentage					5.25%
Debt instrument, interest expense	$ 4,916,000	$ 8,427,000
Debt instrument, interest rate, effective percentage	13.90%
SPHG Holdings
Debt Instrument [Line Items]
Debt instrument, interest expense	$ 1,165,000
SPHG Holdings \| Convertible Senior Unsecured Note
Debt Instrument [Line Items]
Principal amount of notes held				$ 14,900,000.0
Debt instrument stated percentage	7.50%			7.50%
Convertible Notes payable				$ 14,900,000