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Note 12 - Commitments and Contingencies (Details Textual)
$ in Thousands
May 31, 2017
USD ($)
Operating Leases, Future Minimum Payments Due, Next Twelve Months $ 137
Operating Leases, Future Minimum Payments, Due in Two Years 49
Operating Leases, Future Minimum Payments, Due in Three Years 38
Operating Leases, Future Minimum Payments, Due in Four Years 7
Operating Leases, Future Minimum Payments Due $ 231