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Prepaid Royalties	12 Months Ended
	May 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAID ROYALTIES	PREPAID ROYALTIES On August 13, 2007, we entered into a Distribution, Manufacturing and Purchase Option Agreement (“the Agreement”) with a company to acquire the exclusive worldwide rights to manufacture and distribute a split tip catheter for the dialysis market we have named Centros which included the option to purchase certain intellectual property associated with these products in the future. Under this Agreement, we paid royalties on net sales of the products covered in the Agreement. In accordance with the Agreement, we prepaid $3.0 million of royalties based upon the achievement of certain milestones. At May 31, 2011, based on lower than anticipated sales results, we reduced the prepaid royalties to net realizable value which resulted in an impairment loss of $2.3 million recorded in “Acquisition, restructuring and other items, net” in our fiscal 2011 consolidated statement of operations. In August 2011, we sold both the tangible and intangible assets associated with the Centros product, resulting in a gain of $201 thousand that is included in “Acquisition, restructuring and other items, net” in the consolidated statement of operations for the year ended May 31, 2012 and the elimination of all related “Prepaid Royalties” on the consolidted balance sheet as of May 31, 2012. We have entered into various other agreements that required royalty prepayments and these are reported in “Prepaid Royalties” on the May 31, 2014 and May 31, 2013 consolidated balance sheets.

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- Definition

Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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