Goodwill and Other Intangible Assets (Schedule of Intangible Assets Subject to Amortization) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	$ 114,866	$ 60,982
Accumulated Amortization	27,846	21,042
Net Book Value	87,020	39,940
Customer relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	22,292	7,320
Accumulated Amortization	4,782	3,946
Net Book Value	17,510	3,374
Trademarks
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	1,886	1,700
Accumulated Amortization	1,711	1,215
Net Book Value	175	485
Product rights and related intangibles
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	72,626	34,346
Accumulated Amortization	10,146	6,767
Net Book Value	62,480	27,579
License agreements
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	5,938	5,938
Accumulated Amortization	3,642	2,715
Net Book Value	2,296	3,223
EPA registrations and related data
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	11,969	11,523
Accumulated Amortization	7,469	6,325
Net Book Value	4,500	5,198
Technology-based intangibles
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	155	155
Accumulated Amortization	96	74
Net Book Value	$ 59	$ 81