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NATURE OF OPERATIONS	12 Months Ended
NATURE OF OPERATIONS	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
NATURE OF OPERATIONS	NATURE OF OPERATIONS Affymetrix, Inc. ("Affymetrix" or the "Company") is a provider of life science products and molecular diagnostic products that enable multiplex and parallel analysis of biological systems at the gene, protein and cell level. The Company sells products to genomic research centers, academic institutions, government and private laboratories, as well as pharmaceutical, diagnostic and biotechnology companies. The Company also sells some of its products through life science supply specialists acting as authorized distributors in Latin America, India, the Middle East and Asia Pacific regions, including China. In June 2012, the Company acquired eBioscience Holdings, Inc. ("eBioscience") for approximately $315 million (the "Acquisition"). eBioscience is based in San Diego, California, and engaged in the development, manufacture and sale of flow cytometry and immunoassay reagents for life science research and diagnostics.