Schedule of Principal Items Comprising Deferred Income Taxes (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Inventory capitalization	$ 6,614	$ 5,402
Non-deductible accruals	1,902	1,926
Accrued employee benefits	10,297	9,226
Net-operating loss and credit carryforwards	22,232	21,976
Share-based compensation expense	13,222	16,005
Other	1,468	577
Valuation allowances	(2,713)	(2,212)
Total deferred income tax assets	53,022	52,900
Tax over book accumulated depreciation	(15,937)	(17,625)
Intangible assets	(25,132)	(25,505)
Tax on unremitted earnings	(1,753)	(714)
Other	(2,520)	(2,072)
Total deferred income tax liabilities	(45,342)	(45,916)
Net deferred income taxes	$ 7,680	$ 6,984