Basis of Presentation (Tables)

6 Months Ended

Nov. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of inventory

Inventory is comprised of the following amounts: 

(In thousands)	November 30, 2013		May 31, 2013
Raw materials	$	15,915	$	19,800
Work in process	14,941		17,353
Finished goods	218,630		203,287
	$	249,486	$	240,440