Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 187,458	$ 162,228
Adjusted EBITDA	30,458	21,598
Depreciation and amortization	(5,353)	(5,201)
Interest expense, net	(3,490)	(8,735)
Foreign currency gains (losses), net	1,204	(648)
Income before income taxes	22,819	7,014
Identifiable assets	470,820		472,323
Operating Segments
Segment Reporting Information [Line Items]
Net sales	187,458	162,228
Adjusted EBITDA	30,458	21,598
Identifiable assets	470,820		472,323
Operating Segments | Animal Health
Segment Reporting Information [Line Items]
Net sales	117,225	101,171
Adjusted EBITDA	32,454	24,107
Identifiable assets	356,508		361,376
Operating Segments | Mineral Nutrition
Segment Reporting Information [Line Items]
Net sales	55,447	46,186
Adjusted EBITDA	3,479	2,460
Identifiable assets	54,827		57,460
Operating Segments | Performance Products
Segment Reporting Information [Line Items]
Net sales	14,786	14,871
Adjusted EBITDA	1,036	1,096
Identifiable assets	23,172		23,429
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(6,511)	(6,065)
Identifiable assets	$ 36,313		$ 30,058