RELATED PARTY TRANSACTIONS	3 Months Ended
RELATED PARTY TRANSACTIONS	Mar. 31, 2013
RELATED PARTY TRANSACTIONS [Abstract]
RELATED PARTY TRANSACTIONS	NOTE 14—RELATED PARTY TRANSACTIONS In December 2011, the Company entered into an agreement under which it assigned one patent application and related know-how to Cellular Research, Inc. ("Cellular Research"), a company founded by the Company's Chairman, Dr. Stephen P.A. Fodor. Dr. Fodor also owns a majority of the shares of Cellular Research. Pursuant to the agreement, Cellular Research shall pay single digit royalties to Affymetrix on sales of products covered by the assigned technology, and starting in December 2015, an annual minimum fee of $100,000. Affymetrix shall also have a right of first refusal to collaborate with Cellular Research for the development of certain new products and to supply arrays to Cellular Research under certain terms and conditions. As of March 31, 2013, no royalties had been earned pertaining to this agreement.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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