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Prepaid Expenses and Other (Details) - USD ($) $ in Thousands	May 31, 2016	May 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May 31, 2014
Prepaid expenses and other
Deposits	$ 190	$ 2,011
Other prepaid taxes	160	165
License fees	108	121
Software licenses	282	667
Trade shows	278	279
Rent	127	77
Other	2,098	812
Total	$ 3,243	$ 4,132	$ 4,638	$ 6,562	$ 6,466	$ 4,880

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