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GEOGRAPHICAL INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2015
Feb. 28, 2014
May 31, 2014
Revenues:          
North America Revenue $ 809fil_NorthAmericaRevenue $ 1,077fil_NorthAmericaRevenue $ 2,350fil_NorthAmericaRevenue $ 3,335fil_NorthAmericaRevenue  
Europe Revenue 146fil_EuropeRevenue 318fil_EuropeRevenue 512fil_EuropeRevenue 922fil_EuropeRevenue  
Asia Revenue 0fil_AsiaRevenue 0fil_AsiaRevenue 0fil_AsiaRevenue 493fil_AsiaRevenue  
Eliminations Revenue (30)fil_EliminationsRevenue (53)fil_EliminationsRevenue (46)fil_EliminationsRevenue (619)fil_EliminationsRevenue  
Consolidated Revenue Total 925fil_ConsolidatedRevenueTotal 1,342fil_ConsolidatedRevenueTotal 2,816fil_ConsolidatedRevenueTotal 4,131fil_ConsolidatedRevenueTotal  
Long-Lived Assets:          
North America Assets 1,921fil_Northamericaassets1   1,921fil_Northamericaassets1   1,916fil_Northamericaassets1
Europe Assets 41fil_Europeassets1   41fil_Europeassets1   43fil_Europeassets1
Consolidated Assets Total $ 1,962fil_ConsolidatedAssetsTotal   $ 1,962fil_ConsolidatedAssetsTotal   $ 1,959fil_ConsolidatedAssetsTotal