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Acquisition (Tables)
9 Months Ended
Feb. 28, 2015
Acquisition (Tables) [Abstract]  
Schedule of Purchase Price Allocation
Current assets $ 344
Property and equipment   96
Goodwill   1,112
Intangible assets    175
Other non-current assets   37
Current liabilities   (225)
Long-term liabilities   (84)
Total purchase price $ 1,455