SEGMENT INFORMATION - Capital Expenditures and Intangible Assets Acquired (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Segment information [Abstract]
Capital expenditures	$ 19,557	$ 11,328
Human Nutrition & Health | Operating Segments
Segment information [Abstract]
Capital expenditures	14,136	6,041
Animal Nutrition & Health | Operating Segments
Segment information [Abstract]
Capital expenditures	2,788	3,002
Specialty Products | Operating Segments
Segment information [Abstract]
Capital expenditures	2,050	1,376
Industrial Products | Operating Segments
Segment information [Abstract]
Capital expenditures	$ 583	$ 909