COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($)		12 Months Ended
	Dec. 15, 2017	Jul. 31, 2019	Jul. 31, 2018
Commitments and Contingencies [Line Items]
Total rent and equipment lease expense charged to continuing operations		$ 19,000,000	$ 19,200,000
Proceeds from issuance of preferred stock		0	$ 35,000,000
Purchase Agreement | SPHG Holdings | Series C Convertible Preferred Stock
Commitments and Contingencies [Line Items]
Proceeds from issuance of preferred stock	$ 35,000,000
Vendor Agreements
Commitments and Contingencies [Line Items]
Outstanding obligations		$ 0