INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of Finite-Lived Intangible Assets	$ 400,000	$ 1,200,000	$ 1,000,000	$ 2,700,000
Amortizing Identifiable Intangible Assets [Abstract]
Gross	114,175,000		114,175,000		114,258,000
Accumulated Amortization	(110,943,000)		(110,943,000)		(109,998,000)
Net	3,232,000		3,232,000		4,260,000
Future expected amortization expense, identifiable intangible assets
2011	800,000		800,000
2012	1,500,000		1,500,000
2013	1,000,000		1,000,000
Completed Technologies and Patents [Member]
Amortizing Identifiable Intangible Assets [Abstract]
Gross	52,660,000		52,660,000		52,711,000
Accumulated Amortization	(52,660,000)		(52,660,000)		(52,659,000)
Net	0		0		52,000
Customer Relationships [Member]
Amortizing Identifiable Intangible Assets [Abstract]
Gross	49,599,000		49,599,000		49,627,000
Accumulated Amortization	(46,407,000)		(46,407,000)		(45,557,000)
Net	3,192,000		3,192,000		4,070,000
Trade Names [Member]
Amortizing Identifiable Intangible Assets [Abstract]
Gross	5,973,000		5,973,000		5,976,000
Accumulated Amortization	(5,973,000)		(5,973,000)		(5,976,000)
Net	0		0		0
Capitalized Software Costs [Member]
Amortizing Identifiable Intangible Assets [Abstract]
Gross	5,943,000		5,943,000		5,944,000
Accumulated Amortization	(5,903,000)		(5,903,000)		(5,806,000)
Net	$ 40,000		$ 40,000		$ 138,000