COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($)	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Commitments And Contingencies [Line Items]
Accrual for taxes other than income taxes, Current	$ 2,500,000	$ 3,200,000
Contractual obligation	5,100,000	14,900,000
Land purchase option agreement	0
Income taxes receivable	31,060,000	25,390,000
Unknown Country [Member]
Commitments And Contingencies [Line Items]
Income taxes receivable	10,400,000	7,800,000	$ 10,400,000
Deferred tax assets, net	$ 2,800,000	$ 2,700,000