Goodwill and Other Intangible Assets (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	$ 67,871	$ 67,870	$ 66,516
Intangible assets amortization method	straight-line method
Indefinite-lived trademarks	$ 761	760
Finite-lived intangible assets, amortization expense	11,176	$ 10,278	$ 6,662
Estimated aggregate amortization expense for 2017	10,584
Estimated aggregate amortization expense for 2018	9,815
Estimated aggregate amortization expense for 2019	9,320
Estimated aggregate amortization expense for 2020	8,830
Estimated aggregate amortization expense for 2021	8,784
Estimated aggregate amortization expense after 2021	$ 30,977
Customer relationships | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	7 years
Customer relationships | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	11 years
Trademarks | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	3 years
Trademarks | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	4 years
Product rights and related intangibles | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	3 years
Product rights and related intangibles | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	14 years
License agreements | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	6 years
License agreements | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	11 years
EPA registrations and related data
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	10 years
Technology-based intangibles
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life	7 years