Basis of Presentation (Tables)

3 Months Ended

Aug. 31, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of inventory

Inventory is comprised of the following amounts: 

(In thousands)	August 31, 2012		May 31, 2012
Raw materials	$	18,436	$	19,138
Work in process	12,452		13,052
Finished goods	210,811		219,015
	$	241,699	$	251,205