COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	May 31, 2021	Aug. 31, 2020
Commitments And Contingencies [Line Items]
Accrual for taxes other than income taxes, Current	$ 1,700	$ 2,500
Contractual obligation	16,300	5,100
Purchase options, Land	7,400
Income taxes receivable	29,647	31,060
Uncertain income tax	1,200
Unknown Country [Member]
Commitments And Contingencies [Line Items]
Income taxes receivable	11,000	10,400
Deferred tax assets, net	$ 3,200	$ 2,800