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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 |

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