PURCHASED INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Purchased intangible assets
Gross	$ 59,380	$ 57,342
Accumulated Amortization	(39,403)	(36,924)
Net	19,977	20,418
Core technology
Purchased intangible assets
Gross	19,298	18,524
Accumulated Amortization	(8,141)	(7,528)
Net	11,157	10,996
Customer relationships
Purchased intangible assets
Gross	38,012	36,830
Accumulated Amortization	(29,451)	(27,701)
Net	8,561	9,129
Trademarks / Trade names
Purchased intangible assets
Gross	2,070	1,988
Accumulated Amortization	(1,811)	(1,695)
Net	$ 259	$ 293

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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