Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Deferred tax assets:
Net operating loss carryforwards	$ 35,947	$ 36,872
Tax credit carryforwards	2,114	1,994
Inventory valuation	644	700
Depreciation and amortization	847	523
Other accruals not currently deductible for tax purposes	1,809	1,341
Other	85	85
Total deferred tax assets	41,446	41,515
Valuation allowance	(40,850)	(41,087)
Net deferred tax assets	596	428
Deferred tax liabilities:
Depreciation and amortization	(308)
Purchased intangibles	(297)	(316)
Net deferred tax liabilities	(605)	(316)
Total net deferred tax assets (liabilities)	$ (9)	$ 112