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Basis of Presentation (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	May 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials	$ 17,389	$ 19,800
Work in process	15,712	17,353
Finished goods	212,369	203,287
Inventories, net	$ 245,470	$ 240,440

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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