Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Goodwill [Roll Forward]
Goodwill at beginning of year	$ 1,308,195	$ 1,239,666
Accumulated impairment losses	(47,955)	(16,375)
Goodwill at beginning of year	1,260,240	1,223,291
Goodwill acquired during year	201	14,639
Goodwill, Impairment Loss		31,580
Foreign currency translation	(41,325)	53,890
Goodwill at end of year	1,267,071	1,308,195
Accumulated impairment losses at end of year	(47,955)	(47,955)
Goodwill at end of year	1,219,116	1,260,240
Feed Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	830,321	793,457
Accumulated impairment losses	(15,914)	(15,914)
Goodwill at beginning of year	814,407	777,543
Goodwill acquired during year	40	13,925
Goodwill, Impairment Loss		0
Foreign currency translation	(15,498)	22,939
Goodwill at end of year	814,863	830,321
Accumulated impairment losses at end of year	(15,914)	(15,914)
Goodwill at end of year	798,949	814,407
Food Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	351,296	329,654
Accumulated impairment losses	(461)	(461)
Goodwill at beginning of year	350,835	329,193
Goodwill acquired during year	0	0
Goodwill, Impairment Loss		0
Foreign currency translation	(18,430)	21,642
Goodwill at end of year	332,866	351,296
Accumulated impairment losses at end of year	(461)	(461)
Goodwill at end of year	332,405	350,835
Fuel Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	126,578	116,555
Accumulated impairment losses	(31,580)	0
Goodwill at beginning of year	94,998	116,555
Goodwill acquired during year	161	714
Goodwill, Impairment Loss		31,580
Foreign currency translation	(7,397)	9,309
Goodwill at end of year	119,342	126,578
Accumulated impairment losses at end of year	(31,580)	(31,580)
Goodwill at end of year	$ 87,762	$ 94,998