Schedule of Gross Operating Loss Carryforwards and Tax Credit Carryforwards (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014
Federal research and development credits
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 4,117
Federal research and development credits | Minimum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	June 2019
Federal research and development credits | Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	June 2034
State Tax Credits
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	2,827
State Tax Credits | Minimum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	June 2014
State Tax Credits | Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	June 2029
Federal
Operating Loss Carryforwards [Line Items]
Loss carryforwards	36,124
Federal | Minimum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2022
Federal | Maximum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2029
State
Operating Loss Carryforwards [Line Items]
Loss carryforwards	25,116
State | Minimum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2014
State | Maximum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2034
Foreign
Operating Loss Carryforwards [Line Items]
Loss carryforwards	$ 9,427
Foreign | Minimum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2016
Foreign | Maximum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	June 2022