LONG-TERM DEBT - 2017 Credit Agreement Issuance and Amendment Costs (Details) - USD ($) $ in Thousands		1 Months Ended	6 Months Ended		12 Months Ended
	Jun. 29, 2017	Apr. 30, 2021	Jul. 31, 2021	Jul. 31, 2020	Jan. 31, 2018	Apr. 09, 2021	Apr. 06, 2021
Debt Instrument [Line Items]
Payments of debt issuance costs			$ 10,531	$ 2,207
2017 Credit Agreement
Debt Instrument [Line Items]
Payments of debt issuance costs	$ 6,800
Debt restructuring costs incurred during period					$ 2,100
Payments of debt restructuring costs					1,200
Deferred debt restructuring costs					900
2017 Term Loan
Debt Instrument [Line Items]
Payments of debt issuance costs	4,100
Write off of deferred debt issuance cost					200
Deferred debt restructuring costs					500
Deferred debt issuance costs			1,800
2017 Revolving Credit Facility
Debt Instrument [Line Items]
Payments of debt issuance costs	$ 2,700
Write off of deferred debt issuance cost			$ 500
Deferred debt restructuring costs					$ 400
Deferred debt issuance costs						$ 1,300
Deferred debt issuance costs, associated with commitments							$ 800
2021 Revolving Credit Facility
Debt Instrument [Line Items]
Debt restructuring costs incurred during period		$ 1,500