Schedule of Sources of Differences Resulting in Deferred Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Depreciation and amortization	$ (1,844)	$ (3,581)	$ (2,825)
Inventory capitalization	(1,273)	646	84
Net operating loss and credit carryforwards net of valuation allowances	418	533	4,786
Share-based compensation expense	(1,029)	(984)	(3,487)
Other	(53)	(1,049)	3,404
Nondeductible expense, total	$ (3,781)	$ (4,435)	$ 1,962