Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014
Tax Credit Carryforward [Line Items]
Accrued deferred taxes, undistributed earnings and profits	$ 520
Unrecognized tax benefits that, if released, would affect income tax expense	3,142
State and Local Jurisdiction | Research and development credit carryforwards
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	9,419
State and Local Jurisdiction | Research and development credit carryforwards | Minimum
Tax Credit Carryforward [Line Items]
Tax carryforward expiration year	2015
State and Local Jurisdiction | Research and development credit carryforwards | Maximum
Tax Credit Carryforward [Line Items]
Tax carryforward expiration year	2028
State and Local Jurisdiction | Investment Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 312