COMPONENTS OF THE COMPANY'S CONDENSED CONSOLIDATED BALANCE SHEETS Intangible Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Schedule of Intangible Assets [Table] [Line Items]
Intangible Assets, Gross		$ 62,911	$ 62,911
Finite-Lived Intangible Assets, Accumulated Amortization		(26,538)	(24,746)
Total intangible assets		36,373	38,165
Finite-Lived Intangible Assets, Net	[1]	30,422
Technology licenses
Schedule of Intangible Assets [Table] [Line Items]
Finite-Lived Intangible Assets, Gross		3,000	3,000
Finite-Lived Intangible Assets, Accumulated Amortization		(3,000)	(2,925)
Finite-Lived Intangible Assets, Net		0	75
Developed technology
Schedule of Intangible Assets [Table] [Line Items]
Finite-Lived Intangible Assets, Gross		33,270	33,270
Finite-Lived Intangible Assets, Accumulated Amortization		(12,631)	(11,670)
Finite-Lived Intangible Assets, Net		20,639	21,600
Customer relationships
Schedule of Intangible Assets [Table] [Line Items]
Finite-Lived Intangible Assets, Gross		20,030	20,030
Finite-Lived Intangible Assets, Accumulated Amortization		(10,697)	(10,031)
Finite-Lived Intangible Assets, Net		9,333	9,999
In-place leases
Schedule of Intangible Assets [Table] [Line Items]
Finite-Lived Intangible Assets, Gross		660	660
Finite-Lived Intangible Assets, Accumulated Amortization		(210)	(120)
Finite-Lived Intangible Assets, Net		450	540
Domain name
Schedule of Intangible Assets [Table] [Line Items]
Indefinite-Lived Intangible Assets		1,261	1,261
In-process research and development
Schedule of Intangible Assets [Table] [Line Items]
Indefinite-Lived Intangible Assets		$ 4,690	$ 4,690

[1] The total above excludes $4.7 million of in-process research and development that will be amortized, upon completion of development, over the estimated useful life of the technology.