Balance Sheets-Additional Information (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Intangibles, net Cost
Intangibles	$ 101,196	$ 72,857
Accumulated amortization	(41,101)	(35,576)
Intangibles, net	60,095	37,281
Other assets
Acquisition-related note receivable	5,000	5,000
Equity method investments	4,580	4,725
Insurance investments	4,833	4,788
Deferred financing fees	3,602	4,335
Deferred income taxes	28,019	221
Deposits	5,992	532
Other	6,977	5,681
Other assets, total	59,003	25,282
Accrued expenses and other current liabilities
Employee related	21,712	22,273
Commissions and rebates	3,722	4,148
Insurance related	1,780	1,368
Professional fees	3,573	3,543
Income and other taxes	1,910	817
Deferred consideration on acquisitions	1,250	1,196
Fair value of derivatives		1,542
Other	11,756	10,576
Accrued expenses and other current liabilities, total	45,703	45,463
Goodwill roll-forward
Balance at beginning of period	12,613	12,613
MVP acquisition	8,508
Balance at end of period	21,121	12,613
Other liabilities
U.S. pension plan	21,371	18,573
International retirement plans	5,600	4,893
Supplemental retirement benefits, deferred compensation and other	8,984	7,443
Long term and deferred income taxes	8,205	19,098
Deferred consideration on acquisitions	9,172	7,266
Other long term liabilities	7,981	8,375
Other liabilities, total	61,313	65,648
Accumulated other comprehensive income (loss)
Derivative instruments	2,655	(1,542)
Foreign currency translation adjustment	(41,904)	(32,723)
Unrecognized net pension gains (losses)	(30,977)	(19,884)	$ (16,663)
(Provision) benefit for income taxes on derivative instruments	(1,548)	63
(Provision) benefit for incomes taxes on long-term intercompany investments	8,166	4,923
(Provision) benefit for income taxes on pension gains (losses)	1,823	(2,437)
Accumulated other comprehensive income (loss)	(61,785)	(51,600)
Medicated feed additive product registrations
Intangibles, net Cost
Intangibles	11,744	11,753
Accumulated amortization	$ (10,846)	(10,669)
Weighted-Average Useful Life (Years)	10 years
Amprolium international marketing rights
Intangibles, net Cost
Intangibles	$ 4,292	4,292
Accumulated amortization	$ (4,292)	(4,292)
Weighted-Average Useful Life (Years)	10 years
Customer relationships
Intangibles, net Cost
Intangibles	$ 10,606	10,615
Accumulated amortization	$ (6,303)	(5,267)
Weighted-Average Useful Life (Years)	13 years
Technology
Intangibles, net Cost
Intangibles	$ 66,960	38,580
Accumulated amortization	$ (13,877)	(9,741)
Weighted-Average Useful Life (Years)	13 years
Distribution agreements
Intangibles, net Cost
Intangibles	$ 3,275	3,298
Accumulated amortization	$ (3,275)	(3,298)
Weighted-Average Useful Life (Years)	4 years
Trade names, trademarks and other
Intangibles, net Cost
Intangibles	$ 2,740	2,740
Accumulated amortization	$ (2,508)	(2,309)
Weighted-Average Useful Life (Years)	5 years
In-process research and development
Intangibles, net Cost
Intangibles	$ 1,579	$ 1,579