Financial Statement Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 8,012	$ 1,073
Contract assets	1,221	0
Advance payments to vendors	196	961
Prepaid rent and other	0	503
Other receivables	942	2,260
Total prepaid expenses and other current assets	$ 10,371	$ 4,797

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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