SEGMENT INFORMATION - Business Segment Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Net sales	$ 255,467		$ 234,081		$ 505,986	$ 473,740
Cost of sales	162,354		151,087		324,705	309,232
Gross margin	93,113		82,994		181,281	164,508
Operating expenses	41,671		37,197		78,824	77,035
Earnings from operations	51,442		45,797		102,457	87,473
Interest expense, net	2,766		4,240		5,690	9,638
Other income, net	(335)		331		(184)	(241)
Nonoperating Income (Expense)	2,431		4,571		5,506	9,397
Earnings before income tax expense	49,011		41,226		96,951	78,076
Income tax expense	10,733		9,157		21,620	17,021
Net earnings	38,278	$ 37,053	32,069	$ 28,986	75,331	61,055
Operating Segments | Human Nutrition and Health
Segment Reporting Information [Line Items]
Net sales	160,773		147,928		319,230	300,672
Cost of sales	99,467		93,215		198,850	190,597
Gross margin	61,306		54,713		120,380	110,075
Operating expenses	22,964		21,346		44,064	43,451
Earnings from operations	38,342		33,367		76,316	66,624
Operating Segments | Animal Nutrition and Health
Segment Reporting Information [Line Items]
Net sales	56,028		49,557		113,305	103,478
Cost of sales	44,486		39,774		89,403	84,009
Gross margin	11,542		9,783		23,902	19,469
Operating expenses	8,028		7,090		15,152	14,716
Earnings from operations	3,514		2,693		8,750	4,753
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net sales	37,185		35,094		70,460	66,707
Cost of sales	16,571		15,965		32,557	30,591
Gross margin	20,614		19,129		37,903	36,116
Operating expenses	9,345		7,901		17,049	16,689
Earnings from operations	11,269		11,228		20,854	19,427
Other and Unallocated
Segment Reporting Information [Line Items]
Net sales	1,481		1,502		2,991	2,883
Cost of sales	1,830		2,133		3,895	4,035
Gross margin	(349)		(631)		(904)	(1,152)
Operating expenses	1,334		860		2,559	2,179
Earnings from operations	$ (1,683)		$ (1,491)		$ (3,463)	$ (3,331)