GOODWILL AND INTANGIBLE ASSETS - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2020	Jul. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 257,128	$ 257,128
Gross carrying amount	213,250	213,250
Accumulated amortization	64,916	50,732
Intangible assets	$ 148,334	162,518
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	15 years
Gross carrying amount	$ 192,730	192,730
Accumulated amortization	50,381	39,617
Intangible assets	$ 142,349	153,113
Trademarks and Trade Names
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Gross carrying amount	$ 20,520	20,520
Accumulated amortization	14,535	11,115
Intangible assets	5,985	$ 9,405
Direct Marketing
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 257,100