GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Changes in the carrying amount of goodwill
Goodwill as of January 1, 2013 and 2012 net of accumulated impairment losses of $18,945		$ 119,893,000	$ 119,159,000
Business combination		45,950,000	405,000
Translation adjustments		110,000	329,000
Goodwill as of December 31, 2013 and 2012 net of accumulated impairment losses of $18,945	119,893,000	165,953,000	119,893,000
Accumulated impairment loss	18,945,000	18,945,000	18,945,000
Finite-lived intangible assets
Intangible assets, gross	10,774,000	25,221,000	10,774,000
Less: accumulated amortization	(8,915,000)	(10,640,000)	(8,915,000)
Intangible assets, net	1,859,000	14,581,000	1,859,000
Weighted-Average Useful Life (in years)		12 years 2 months
Write off of fully amortized intangible assets	31,800,000
Estimated future amortization expense
2014		2,023,000
2015		1,733,000
2016		949,000
2017		927,000
2018		867,000
Thereafter		8,082,000
Total intangible assets, net		14,581,000
Intellectual property rights
Finite-lived intangible assets
Intangible assets, gross	5,199,000	5,199,000	5,199,000
Weighted-Average Useful Life (in years)		8 years
Patents
Finite-lived intangible assets
Intangible assets, gross	1,266,000	12,452,000	1,266,000
Weighted-Average Useful Life (in years)		18 years
Distribution/customer relationships
Finite-lived intangible assets
Intangible assets, gross	3,597,000	4,029,000	3,597,000
Weighted-Average Useful Life (in years)		6 years 4 months 12 days
Trade name/trademarks
Finite-lived intangible assets
Intangible assets, gross	399,000	810,000	399,000
Weighted-Average Useful Life (in years)		8 years 4 months
Collaboration agreements
Finite-lived intangible assets
Intangible assets, gross	0	1,500,000	0
Weighted-Average Useful Life (in years)		2 years
Non-competition agreements
Finite-lived intangible assets
Intangible assets, gross	$ 313,000	$ 1,231,000	$ 313,000
Weighted-Average Useful Life (in years)		4 years