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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Joint Ventures) (Details) | May 31, 2018
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Aero Post [Member] | El Salvador [Member] | Consolidated Entities [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 60.00% |
Aero Post [Member] | Guatemala [Member] | Consolidated Entities [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 60.00% |
Aero Post [Member] | British Virgin Islands [Member] | Consolidated Entities [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 50.00% |
Aero Post [Member] | Trinidad [Member] | Consolidated Entities [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 50.00% |
Real Estate Development [Member] | Panama [Member] | Equity Method Investee [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 50.00% | [1]
Real Estate Development [Member] | Costa Rica [Member] | Equity Method Investee [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 50.00% | [1]
[1] | Joint venture interests are recorded as investment in unconsolidated affiliates on the consolidated balance sheets.

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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