Components of Net Deferred Tax Assets (Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Deferred tax assets:
Inventory valuation and receivable allowances	$ 8,805	$ 4,788
Accrued compensation	1,197	1,367
Equity compensation	6,290	6,036
Federal and state research and development tax credit carryforwards	9,746	8,569
Other accruals	1,087	919
Other temporary differences	3,038	1,333
Deferred tax Asset	31,839	25,128
Valuation allowance	(9,032)	(8,682)
Total deferred tax assets	22,807	16,446
Deferred tax liabilities:
Deferred revenue	(1,745)	(3,488)
Property and equipment depreciation	(3,122)	(3,995)
Acquired intangible assets	(12,342)	(8,507)
Other temporary differences	(1,647)	0
Total deferred tax liabilities	(18,856)	(15,990)
Net deferred tax (liabilities) assets	3,951	456
Other Amortizable Assets
Deferred tax assets:
Gain on sale-leaseback	$ 1,676	$ 2,116