Note 5 - Inventories, Net (Tables)

9 Months Ended

Feb. 28, 2017

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	As of
	February 28, 2017		May 31, 2016
Raw materials and supplies	$	12,490		11,840
Work in process		13,335		11,944
Finished goods		23,045		23,110
Total Inventories, net	$	48,870		46,894