INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Feb. 01, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill	$ 441,668		$ 383,906
Identifiable intangible assets [Abstract]
Gross carrying amount	253,860		207,758
Accumulated amortization	80,091		72,847
Amortization of identifiable finite-lived intangible assets [Abstract]
Amortization of identifiable intangible assets	7,245
Finite-lived intangible assets, future amortization expense [Abstract]
Remainder of 2016	23,175
2017	26,720
2018	24,135
2019	22,050
2020	20,020
2021	16,812
Indefinite-lived intangible assets	0
Human Nutrition & Health [Member]
Goodwill [Line Items]
Goodwill	405,408	$ 41,624	363,784
Animal Nutrition & Health [Member]
Goodwill [Line Items]
Goodwill	11,734		11,734
Specialty Products [Member]
Goodwill [Line Items]
Goodwill	23,298	$ 16,138	7,160
Industrial Products [Member]
Goodwill [Line Items]
Goodwill	$ 1,228		1,228
Customer Relationships & Lists [Member]
Identifiable intangible assets [Abstract]
Amortization period	10 years
Gross carrying amount	$ 190,452		167,442
Accumulated amortization	$ 69,252		63,578
Trademarks & Trade Names [Member]
Identifiable intangible assets [Abstract]
Amortization period	17 years
Gross carrying amount	$ 39,228		32,014
Accumulated amortization	$ 6,569		5,704
Developed Technology [Member]
Identifiable intangible assets [Abstract]
Amortization period	5 years
Gross carrying amount	$ 12,260		3,200
Accumulated amortization	1,519		1,057
Other [Member]
Identifiable intangible assets [Abstract]
Gross carrying amount	11,920		5,102
Accumulated amortization	$ 2,751		$ 2,508
Other [Member] | Minimum [Member]
Identifiable intangible assets [Abstract]
Amortization period	5 years
Other [Member] | Maximum [Member]
Identifiable intangible assets [Abstract]
Amortization period	17 years