COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2017	Nov. 30, 2018	Aug. 31, 2018
Commitments And Contingencies [Line Items]
Accrual for taxes other than income taxes, Current		$ 3,000,000	$ 3,000,000
Contractual obligation		6,900,000	10,600,000
Land purchase option agreement		4,200,000	400,000
Land under purchase options, Not recorded		47,600,000
Provisional assessments		2,600,000
Additional provisional assessment		5,300,000
Income taxes receivable		23,985,000	24,509,000
Remaining outstanding balance		$ 68,605,000	68,368,000
Miami-Dade County, Florida [Member]
Commitments And Contingencies [Line Items]
Letter of credit payable to the landlord	$ 500,000
Debt term		4 years
Annual decrease in LOC			125,000
Remaining outstanding balance		$ 375,000
Unknown Country [Member]
Commitments And Contingencies [Line Items]
Deferred tax assets, net		2,100,000	2,100,000
Income taxes receivable		7,000,000	$ 7,100,000
Aeropost, Inc [Member]
Commitments And Contingencies [Line Items]
Unrecognized tax benefits		$ 3,600,000