Schedule of Principal Items Comprising Deferred Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Significant Components Of Deferred Income Tax Expense [Line Items]
Inventory capitalization	$ 5,402	$ 6,333
Non-deductible accruals	1,926	1,930
Accrued employee benefits	9,226	6,790
Net-operating loss and credit carryforwards	21,976	22,849
Share-based compensation expense	16,005	15,021
Other	577	205
Valuation allowances	(2,212)	(2,885)
Total deferred income tax assets	52,900	50,243
Tax over book accumulated depreciation	(17,625)	(16,988)
Intangible assets	(25,505)	(21,561)
Other	(2,786)	(2,409)
Total deferred income tax liabilities	(45,916)	(40,958)
Net deferred income taxes	$ 6,984	$ 9,285