Goodwill (Details) $ in Thousands	6 Months Ended
	Jul. 03, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill	$ 1,308,195
Accumulated impairment losses	(47,955)
Goodwill	1,260,240
Goodwill, Acquired During Period	201
Foreign currency translation	(14,892)
Goodwill	1,293,504
Accumulated impairment losses	(47,955)
Goodwill	1,245,549
Feed Ingredients
Goodwill [Roll Forward]
Goodwill	830,321
Accumulated impairment losses	(15,914)
Goodwill	814,407
Goodwill, Acquired During Period	40
Foreign currency translation	(2,675)
Goodwill	827,686
Accumulated impairment losses	(15,914)
Goodwill	811,772
Fuel Ingredients
Goodwill [Roll Forward]
Goodwill	126,578
Accumulated impairment losses	(31,580)
Goodwill	94,998
Goodwill, Acquired During Period	161
Foreign currency translation	(3,505)
Goodwill	123,234
Accumulated impairment losses	(31,580)
Goodwill	91,654
Food Ingredients
Goodwill [Roll Forward]
Goodwill	351,296
Accumulated impairment losses	(461)
Goodwill	350,835
Goodwill, Acquired During Period	0
Foreign currency translation	(8,712)
Goodwill	342,584
Accumulated impairment losses	(461)
Goodwill	$ 342,123