GOODWILL AND INTANGIBLE ASSETS (Details 3) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 15,000		$ 15,000
Finite-Lived Intangible Assets, Accumulated Amortization	(15,000)		(14,919)
Intangibles, net	0		81
Amortization expense for intangibles	100	$ 100
Core technology
Intangible Assets
Finite-Lived Intangible Assets, Gross	2,900		2,900
Finite-Lived Intangible Assets, Accumulated Amortization	(2,900)		(2,819)
Intangibles, net	$ 0		$ 81
Finite-Lived Intangible Asset, Useful Life	9 years		9 years
Developed technology
Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 11,700		$ 11,700
Finite-Lived Intangible Assets, Accumulated Amortization	(11,700)		(11,700)
Intangibles, net	$ 0		$ 0
Finite-Lived Intangible Asset, Useful Life	7 years		7 years
Trademarks and trade names
Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 400		$ 400
Finite-Lived Intangible Assets, Accumulated Amortization	(400)		(400)
Intangibles, net	$ 0		$ 0
Finite-Lived Intangible Asset, Useful Life	7 years		7 years