PROPERTY AND EQUIPMENT (Narrative) (Details)		3 Months Ended
	Dec. 04, 2015 ft² property	Nov. 30, 2016 USD ($) warehouse	Aug. 31, 2016 USD ($)
Property, Plant and Equipment [Line Items]
Number of stores | warehouse		39
Property and equipment, net		$ 469,423,000	$ 473,045,000
Accounts payable		280,601,000	267,173,000
Other accrued expenses		25,450,000	24,880,000
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Accounts payable			280,000
Other accrued expenses		$ 2,500,000	$ 1,700,000
Colombia [Member]
Property, Plant and Equipment [Line Items]
Number of stores | warehouse		7
Honduras [Member]
Property, Plant and Equipment [Line Items]
Number of stores | warehouse		3
Option to acquire, Number of properties | property	2
Area of land | ft²	59,353
Property and equipment, net		$ 1,900,000
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