GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Oct. 30, 2010
GOODWILL AND INTANGIBLE ASSETS
Goodwill and intangible assets				$ 0
Changes in goodwill
Balance at the beginning of the period	21,693
Foreign currency translation	(752)
Balance at the end of the period	20,941
Intangible assets
Total amortizing intangible assets	38,819		40,263
Accumulated amortization	(4,536)		(4,341)
Total intangible assets, net	35,187		36,832
Amortization expense	352	367
Permits and licenses
Intangible assets
Nonamortizing intangible assets	750		750
Tradename
Intangible assets
Nonamortizing intangible assets	154		160
Developed software
Intangible assets
Total amortizing intangible assets	317		329
Database
Intangible assets
Total amortizing intangible assets	90		94
Customer relationships
Intangible assets
Total amortizing intangible assets	4,863		5,005
Technology - Formulae and processes
Intangible assets
Total amortizing intangible assets	8,235		8,551
Permits, licenses and lease
Intangible assets
Total amortizing intangible assets	25,294		26,264
Non-compete agreements
Intangible assets
Total amortizing intangible assets	$ 20		$ 20