Income Taxes - Schedule of Gross Operating Loss Carryforwards and Tax Credit Carryforwards (Detail) $ in Thousands	Jun. 30, 2020 USD ($)
Foreign
Tax credit carryforwards:
Tax credit carryforwards	$ 14,354
Operating loss carryforwards:
Loss carryforwards	10,683
Loss carryforwards, Indefinite	36,806
State
Tax credit carryforwards:
Tax credit carryforwards	14,364
Tax credit carryforwards, Indefinite	40,316
Operating loss carryforwards:
Loss carryforwards	110,587
Federal
Operating loss carryforwards:
Loss carryforwards	166,643
Federal research and development credits
Tax credit carryforwards:
Tax credit carryforwards	$ 71,694