PROPERTY AND EQUIPMENT (Summary of Property and Equipment) (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, historical cost	$ 1,134,731	$ 1,045,832
Less: accumulated depreciation	(404,527)	(353,553)
Property and equipment, net	730,204	692,279
Land [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, historical cost	216,703	215,433
Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, historical cost	533,802	498,964
Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, historical cost	315,391	287,073
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, historical cost	$ 68,835	$ 44,362