Goodwill and Other Intangible Assets (Schedule of Intangible Assets Subject to Amortization) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	$ 60,982	$ 59,775
Accumulated Amortization	21,042	15,395
Net Book Value	39,940	44,380
Customer Relationships [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	7,320	7,226
Accumulated Amortization	3,946	3,435
Net Book Value	3,374	3,791
Trademarks [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	1,700	1,700
Accumulated Amortization	1,215	729
Net Book Value	485	971
Product Rights and Related Intangibles [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	34,346	33,221
Accumulated Amortization	6,767	4,105
Net Book Value	27,579	29,116
License Agreements [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	5,938	5,938
Accumulated Amortization	2,715	1,789
Net Book Value	3,223	4,149
EPA Registrations and Related Data [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	11,523	11,535
Accumulated Amortization	6,325	5,285
Net Book Value	5,198	6,250
Technology-based Intangibles [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	155	155
Accumulated Amortization	74	52
Net Book Value	$ 81	$ 103