Balance Sheet Components - Goodwill (Details) - USD ($)	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Goodwill	$ 35,801,000	$ 35,801,000
Goodwill impairment	$ 0

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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