Summary of Principal Contractual Obligations, Excluding Operating Leases (Detail) $ in Thousands	Mar. 31, 2020 USD ($)
Purchase Commitments
2020 (remaining nine months)	$ 10,940
Other Contractual Commitments
2020 (remaining nine months)	448
Total Commitments
2020 (remaining nine months)	$ 11,388

Minimum amount of purchase arrangement maturing in the remainder of the fiscal year following the latest fiscal year ended. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

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