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Acquisition (Tables)
3 Months Ended
Aug. 31, 2015
Acquisition (Tables) [Abstract]  
Schedule of Purchase Price Allocation
Current assets  $ 350 
Property and equipment    113 
Goodwill   1,170 
Intangible assets    139 
Other non-current assets   25 
Current liabilities   (245) 
Long-term liabilities   (97) 
Total purchase price $ 1,455