Basis of Presentation (Tables)

6 Months Ended

Nov. 30, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of inventory

Inventory is comprised of the following amounts: 

(In thousands)	November 30, 2012		May 31, 2012
Raw materials	$	20,489	$	19,138
Work in process	13,209		13,052
Finished goods	202,497		219,015
	$	236,195	$	251,205