Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2013	Jan. 14, 2008
Accounting Policies [Abstract]
Adverse effect on earnings per share resulting from changing sales forecasts				$ 1.00
Costs relating to delayed delivery of product	$ 4.6	$ 5.8
Amount of potential liability including interest			27.0
Estimate of goods imported not qualify for preferential tariff treatment			$ 3.6