Basis of Presentation (Tables)

3 Months Ended

Aug. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of inventory

Inventory is comprised of the following amounts: 

(In thousands)	August 31, 2013		May 31, 2013
Raw materials	$	17,389	$	19,800
Work in process	15,712		17,353
Finished goods	212,369		203,287
	$	245,470	$	240,440