GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Intangible Assets, Net[Abstract]
Total intangible assets, Gross	$ 58,780,000		$ 57,519,000
Accumulated amortization	(23,256,000)		(17,185,000)
Total	29,573,000	[1]
Total Intangible Assets, Net	35,524,000		40,334,000
Amortization of intangibles	6,072,000		7,404,000	5,164,000
Technology licenses [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	3,000,000		3,000,000
Accumulated amortization	(2,625,000)		(2,325,000)
Total	375,000		675,000
Patent rights [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	1,949,000		1,949,000
Accumulated amortization	(1,949,000)		(1,949,000)
Total	0		0
Patent rights [Member] | Maximum [Member]
Intangible Assets and Goodwill [Line Items]
Useful life (in years)	12 years
Developed technology [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	26,670,000		26,670,000
Accumulated amortization	(7,828,000)		(5,247,000)
Total	18,842,000		21,423,000
Customer relationships [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	17,610,000		17,610,000
Accumulated amortization	(7,254,000)		(4,664,000)
Total	10,356,000		12,946,000
Trade names [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	3,600,000		3,600,000
Accumulated amortization	(3,600,000)		(3,000,000)
Total	0		600,000
Trade names [Member] | Minimum [Member]
Intangible Assets and Goodwill [Line Items]
Useful life (in years)	2 years
Internet Domain Names [Member]
Intangible Assets, Net[Abstract]
Indefinite-lived intangible assets	1,261,000		0
In-process research and developement [Member]
Intangible Assets, Net[Abstract]
Finite-lived intangible assets, Gross	4,690,000		4,690,000
Total	4,690,000		4,690,000
In-process research and developement [Member] | Early Stage Research And Developement Company [Member]
Intangible Assets and Goodwill [Line Items]
Finite-lived intangible assets	$ 4,700,000

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