Balance Sheet Components - Accounts Receivable, Net (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for doubtful accounts	$ 2,200,000		$ 500,000
Bad debt expense	2,209,000	$ 259,000
Write-off of uncollectible accounts receivable	$ 500,000	$ 0