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Schedule of Gross Operating Loss Carryforwards and Tax Credit Carryforwards (Detail) $ in Thousands | 12 Months Ended
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Jun. 30, 2018 USD ($)
Federal research and development credits |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards | $ 13,913
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 | 2038-06
Foreign |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards | $ 251
Loss carryforwards | $ 16,347
Foreign | Minimum |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards, expiration date | 2024-06
Loss carryforwards, expiration date | 2019-06
Foreign | Maximum |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards, expiration date | 2028-06
Loss carryforwards, expiration date | 2028-06
State |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards | $ 5,594
Loss carryforwards | $ 47,756
State | Minimum |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards, expiration date | 2019-06
Loss carryforwards, expiration date | 2019-06
State | Maximum |
Operating Loss Carryforwards [Line Items] |
Tax credit carryforwards, expiration date | 2038-06
Loss carryforwards, expiration date | 2038-06
Federal |
Operating Loss Carryforwards [Line Items] |
Loss carryforwards | $ 68,661
Federal | Minimum |
Operating Loss Carryforwards [Line Items] |
Loss carryforwards, expiration date | 2020-06
Federal | Maximum |
Operating Loss Carryforwards [Line Items] |
Loss carryforwards, expiration date | 2038-06

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