LEASES (Schedule of Future Minimum Lease Commitments) (Details)	Aug. 31, 2017 USD ($)
LEASES [Abstract]
2018	$ 11,596,000	[1]
2019	11,715,000	[1]
2020	11,093,000	[1]
2021	9,615,000	[1]
2022	8,894,000	[1]
Thereafter	116,066,000	[1]
Total	168,979,000	[1],[2],[3]
Sub-lease income	$ 928,000

[1] Operating lease obligations have been reduced by approximately $928,000 to reflect sub-lease income. Certain obligations under leasing arrangements are collateralized by the underlying asset being leased.

[2] As of August 31, 2016, total future minimum lease commitments were $120.9 million. The increase during fiscal year 2017 is primarily related to the extension of an existing lease within the Company's Guatemala subsidiary for its Pradera location. The subsidiary signed an extension on November 25, 2016, extending the lease termination date from May 31, 2021 to November 30, 2043. The lease extension included the real property at this location currently used by the Company and added additional square footage in the same shopping center to the lease. This has effectively provided the Company with possession of substantially all of the real property available at that location. The Company plans to expand and upgrade the current warehouse club and parking areas and to improve access into and out from the location.

[3] Future minimum lease payments include $3.2 million of lease payment obligations for the prior leased Miami distribution center. For the purposes of calculating the minimum lease payments, no reduction was considered for the potential sub-lease income the Company could receive during the remaining lease term. This potential sub-lease income was considered, however, for the purposes of calculating the exit obligation of $57,000 recorded on the balance sheet as of August 31, 2017. Projected income for any executed sub-leases would be used to reduce the amount reported as minimum lease payments.