SEGMENT INFORMATION, REVENUE AND GROSS PROFIT (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment business_unit	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment			2
Number of business units \| business_unit			4
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue:	$ 88,966	$ 85,432	$ 177,684	$ 168,403
Gross Profit:	57,079	48,844	111,916	95,400
Operating Segments [Member] \| Affymetrix Core [Member]
Segment Reporting Information [Line Items]
Revenue:	65,038	62,085	129,484	121,532
Gross Profit:	42,507	37,230	83,133	72,234
Operating Segments [Member] \| eBioscience [Member]
Segment Reporting Information [Line Items]
Revenue:	23,928	23,347	48,200	46,871
Gross Profit:	$ 14,572	$ 11,614	$ 28,783	$ 23,166

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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+ References

No definition available.

+ Details

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