Note 18 - Commitments and Contingencies (Tables)

6 Months Ended

Nov. 30, 2016

Notes Tables

Schedule of Future Payments for Royalty Payment Commitments [Table Text Block]

Year Ended May 31:
2017	$	13,788
2018		11,746
2019		7,883
2020		4,301
2021		2,576
Total	$	40,294