Basis of Presentation (Tables)

3 Months Ended

Aug. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Inventory

Inventory is comprised of the following amounts at: 

(In thousands)	August 31, 2015		May 31, 2015
Raw materials	$	17,783	$	16,935
Work in process	18,285		17,079
Finished goods	203,978		192,197
	$	240,046	$	226,211