BUSINESS COMBINATION: (Details 2) (Voltaire Ltd, USD $) In Thousands, unless otherwise specified	1 Months Ended
	Feb. 28, 2011	Feb. 07, 2011
Identifiable intangible assets
Fair value of acquired intangibles		$ 36,052
Developed technology
Identifiable intangible assets
Fair value of acquired intangibles		20,378
Developed technology | Minimum
Identifiable intangible assets
Weighted average useful life	2 years
Developed technology | Maximum
Identifiable intangible assets
Weighted average useful life	3 years
Customer relationship
Identifiable intangible assets
Fair value of acquired intangibles		10,956
Customer relationship | Minimum
Identifiable intangible assets
Weighted average useful life	4 years
Customer relationship | Maximum
Identifiable intangible assets
Weighted average useful life	5 years
Customer contract
Identifiable intangible assets
Fair value of acquired intangibles		1,529
Weighted average useful life	2 years
Backlog
Identifiable intangible assets
Fair value of acquired intangibles		435
Backlog | Maximum
Identifiable intangible assets
Weighted average useful life	1 year
In process research and development
Identifiable intangible assets
Fair value of acquired intangibles		$ 2,754