Note 18 - Commitments and Contingencies (Tables)

9 Months Ended

Feb. 28, 2017

Notes Tables

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

Year ended May 31:
2017	$	10,831
2018		12,705
2019		7,337
2020		3,498
2021		1,750
Total	$	36,121