Schedule of Gross Operating Loss Carryforwards and Tax Credit Carryforwards (Detail) $ in Thousands	12 Months Ended
	Jun. 30, 2016 USD ($)
Federal research and development credits
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 8,479
Federal research and development credits | Minimum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2019-06
Federal research and development credits | Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2036-06
Foreign
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 2,594
Loss carryforwards	$ 2,049
Foreign | Minimum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2024-06
Loss carryforwards, expiration date	2017-06
Foreign | Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2026-06
Loss carryforwards, expiration date	2024-06
State
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 3,218
Loss carryforwards	$ 48,934
State | Minimum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2017-06
Loss carryforwards, expiration date	2017-06
State | Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration date	2036-06
Loss carryforwards, expiration date	2036-06
Federal
Operating Loss Carryforwards [Line Items]
Loss carryforwards	$ 93,081
Federal | Minimum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	2021-06
Federal | Maximum
Operating Loss Carryforwards [Line Items]
Loss carryforwards, expiration date	2036-06