INTANGIBLE ASSETS, NET (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible assets, net
Intangible assets, net	$ 28,116,000	$ 27,257,000
Estimated future amortization
2014	6,715,000
2015	5,978,000
2016	4,528,000
2017	4,328,000
2018	3,102,000
Thereafter	3,465,000
Total future amortization	28,116,000	27,257,000
Patented Technology [Member]
Intangible assets, net
Intangible assets, net	5,344,000
Amortization expense	2,300,000	3,700,000	3,500,000
Estimated future amortization
2014	1,563,000
2015	1,390,000
2016	1,147,000
2017	1,147,000
2018	97,000
Thereafter	0
Total future amortization	5,344,000
Noncompete Agreements [Member]
Intangible assets, net
Intangible assets, gross	3,794,000	3,595,000
Developed technology [Member]
Intangible assets, net
Intangible assets, gross	22,398,000	20,298,000
Licensing Agreements [Member]
Intangible assets, net
Intangible assets, gross	23,814,000	18,123,000
Accumulated Amortization	(18,470,000)	(16,171,000)
Intangible assets, net	5,344,000	1,952,000
Estimated future amortization
Total future amortization	5,344,000	1,952,000
Acquisition-Related Intangible Assets
Intangible assets, net
Intangible assets, gross	52,049,000	48,550,000
Accumulated Amortization	(29,277,000)	(23,245,000)
Intangible assets, net	22,772,000	25,305,000
Amortization expense	6,000,000	5,600,000	4,600,000
Estimated future amortization
2014	5,152,000
2015	4,588,000
2016	3,381,000
2017	3,181,000
2018	3,005,000
Thereafter	3,465,000
Total future amortization	22,772,000	25,305,000
Customer Relationships [Member]
Intangible assets, net
Intangible assets, gross	25,857,000	24,657,000
For developed technology [Member] | Acquisition-Related Intangible Assets
Intangible assets, net
Amortization expense	$ 1,000,000	$ 1,500,000	$ 1,100,000