LEASES (Summary of Leased Property) (Details) - ft²		12 Months Ended
		Aug. 31, 2016	Apr. 30, 2016	Jan. 31, 2015
Operating Leased Assets [Line Items]
Area of property		2,835,117
Salitre, Colombia [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		98,566
Remaining Option(s) to Extend		20 years
Via Brazil, Panama [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		68,696
Remaining Option(s) to Extend		10 years
Miraflores, Guatemala [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property	[1]	68,977
Remaining Option(s) to Extend	[1]	5 years
Additional extended area			2,918
Pradera, Guatemala [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		48,438
Tegucigalpa, Honduras [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		64,735
Oranjestad, Aruba [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		64,627
Remaining Option(s) to Extend		10 years
Port of Spain, Trinidad [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		54,046
St. Thomas, U.S.V.I. [Member] | Warehouse Club [Member]
Operating Leased Assets [Line Items]
Area of property		54,046
Remaining Option(s) to Extend		10 years
Barbados [Member] | Storage Facility [Member]
Operating Leased Assets [Line Items]
Area of property		12,517
Remaining Option(s) to Extend		3 years
Chaguanas, Trinidad [Member] | Employee Parking [Member]
Operating Leased Assets [Line Items]
Area of property		4,944
Chaguanas, Trinidad [Member] | Container Parking [Member]
Operating Leased Assets [Line Items]
Area of property		65,340
Jamaica [Member] | Storage Facility [Member]
Operating Leased Assets [Line Items]
Area of property		17,000
Remaining Option(s) to Extend		2 years
Santo Domingo, Dominican Republic [Member] | Central Offices [Member]
Operating Leased Assets [Line Items]
Area of property		2,002
Remaining Option(s) to Extend		5 years
Bogota, Colombia [Member] | Central Offices [Member]
Operating Leased Assets [Line Items]
Area of property	[2]	7,812
Additional extended area		1,884
San Diego, California [Member] | Corporate Headquarters [Member]
Operating Leased Assets [Line Items]
Area of property	[3]	43,027
Remaining Option(s) to Extend	[3]	5 years
Additional extended area				2,799
Miami, Florida [Member] | Distribution Facility [Member]
Operating Leased Assets [Line Items]
Area of property	[4]	371,476
Remaining Option(s) to Extend	[4]	5 years
Additional extended area		100,295
Panama [Member] | Central Offices [Member]
Operating Leased Assets [Line Items]
Area of property		17,975
Remaining Option(s) to Extend		15 years
Costa Rica [Member] | Storage and Distribution Facility [Member]
Operating Leased Assets [Line Items]
Area of property		37,674
Remaining Option(s) to Extend		3 years
Trinidad [Member] | Storage and Distribution Facility [Member]
Operating Leased Assets [Line Items]
Area of property		17,110

[1] In April 2016, the Company executed an amendment to the existing lease to expand the facility's parking lot by 2,918 square feet of space.

[2] On August 31, 2016, the Company executed a contract to expand the central office space to include an additional 1,884 square feet of space, effective September 1, 2016. The additional space is not included in the table above; however, the lease is included in the calculation of future minimum lease commitments.

[3] In January 2015, the Company executed a fourth amendment to include 2,799 square feet of space, in which the Company sub-leased all 2,799 square feet of space to another party through October 2016. The 2,799 square feet of space is not included in the above table.

[4] In August 2016, the Company executed a fourth amendment to the existing lease, to extend the portion of the lease pertaining to 100,295 square feet of space through December 31, 2027.