PROPERTY AND EQUIPMENT (Narrative) (Details) - USD ($)	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Property, Plant and Equipment [Line Items]
Accounts payable	$ 255,739,000	$ 272,248,000
Other accrued expenses	28,281,000	26,483,000
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Accounts payable	81,000	612,000
Other accrued expenses	$ 1,400,000	$ 3,100,000
Minimum [Member] | Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum [Member] | Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum [Member] | Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful life	15 years
Maximum [Member] | Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Useful life	25 years