SEGMENT INFORMATION - Depreciation and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment information [Abstract]
Depreciation and amortization	$ 12,549	$ 10,836
Human Nutrition & Health | Operating Segments
Segment information [Abstract]
Depreciation and amortization	7,844	7,986
Animal Nutrition & Health | Operating Segments
Segment information [Abstract]
Depreciation and amortization	1,755	1,578
Specialty Products | Operating Segments
Segment information [Abstract]
Depreciation and amortization	2,392	1,021
Specialty Products | Other and Unallocated
Segment information [Abstract]
Depreciation and amortization	$ 558	$ 251