Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Total accounts receivable	$ 13,834	$ 23,860
Less: Allowance for doubtful accounts	(175)	(372)
Accounts receivable, net of allowance for doubtful accounts	13,659	23,488
United States
Accounts Notes And Loans Receivable [Line Items]
Total accounts receivable	8,279	18,893
International
Accounts Notes And Loans Receivable [Line Items]
Total accounts receivable	$ 5,555	$ 4,967