PURCHASED INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Purchased intangible assets
Gross	$ 60,992	$ 55,742
Accumulated Amortization	(47,012)	(39,915)
Net	13,980	15,827
Core technology
Purchased intangible assets
Gross	19,831	17,751
Accumulated Amortization	(9,924)	(8,165)
Net	9,907	9,586
Customer relationships
Purchased intangible assets
Gross	39,028	36,088
Accumulated Amortization	(34,955)	(29,965)
Net	4,073	6,123
Trademarks / Trade names
Purchased intangible assets
Gross	2,133	1,903
Accumulated Amortization	(2,133)	(1,785)
Net	$ 0	$ 118

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=66006027&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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