SEGMENT INFORMATION, Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Capital expenditures	$ 3,735	$ 2,934
Human Nutrition & Health [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	2,079	1,755
Animal Nutrition & Health [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	830	792
Specialty Products [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	582	216
Industrial Products [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 244	$ 171