Commitments and Contingencies - Schedule of Future Minimum Contractual Royalty Payments to Licensors and Marketing Commitments (Detail) $ in Thousands	Jun. 30, 2018 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Remaining 2018	$ 9,112
2019	19,500
2020	32,750
Total	$ 61,362

Amount of contractual obligation due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	us-gaap_ContractualObligationDueInSecondYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant