Note 5 - Inventories, Net (Tables)

6 Months Ended

Nov. 30, 2015

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	As of
	November 30, 2015		May 31, 2015
Raw materials and supplies	$	13,690		10,816
Work in process		9,953		9,197
Finished goods		21,041		21,834
	$	44,684		41,847